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Kai Liu's Research Group

Publications

Google Scholar List

Refereed Journal Publications

  1. D. Bista, W. B. Beeson, T. Sengupta, J. Jackson, S. N. Khanna, Kai Liu, and Gen Yin, “Fast ab initio design of high-entropy magnetic thin films”, submitted; arXiv: 2404.18283.
  2. J. Malloy, E. Marlowe, C. J. Jensen, I. S. Liu, T. Hulse, A. F. Murray, D. Bryan, T. G. Denes, D. A. Gilbert, G. Yin, and Kai Liu, “Microstructure-Dependent Particulate Filtration using Multifunctional Metallic Nanowire Foams”, Nanoscale, 16, 15094 (2024).
  3. W. B. Beeson, D. Bista, H.R. Zhang, S. Krylyuk, A. Davydov, G. Yin, and Kai Liu, “Single-Phase L10-Ordered High Entropy Thin Films with High Magnetic Anisotropy”, Advanced Science, 11, 2308574 (2024).
  4. N. López-Pintó, C. J. Jensen, Z. J. Chen, Z.W. Tan, Z. Ma, M. O. Liedke, M. Butterling, A. Wagner, J. Herrero-Martín, E. Menéndez, J. Nogués, Kai Liu, and J. Sort, “Room-temperature solid-state nitrogen-based magneto-ionics in CoxMn1-xN films”, Advanced Functional Materials, 34, 2404487 (2024).
  5. C. Liu, J.L. Wang, W. He, C.H. Zhang, S. Yuan, Z.P. Hou, X.S. Gao, Y. Peng, Kai Liu, Z.Q. Qiu, J.M. Liu, and X.X. Zhang, “Strain-Induced Reversible Motion of Skyrmions at Room Temperature”, ACS Nano, 18, 761-769 (2024).
  6. B. J. Fugetta, Z.J. Chen, D. Bhattacharya, Kun Yue, Kai Liu, A. Y. Liu, and G. Yin, “Machine-Learning Recognition of Dzyaloshinskii-Moriya Interaction from Magnetometry”, Physical Review Research 5, 043012 (2023). arXiv:2304.05905.
  7. Z. J. Chen, C. J. Jensen, C. Liu, X. X. Zhang, and Kai Liu, “Ionically-Driven Synthesis and Exchange Bias in Mn4N/MnNx Heterostructures”, Applied Physics Letters, 123, 082403 (2023); arXiv:2308.04274
  8. Xin He, Yinchang Ma, Chenhui Zhang, Aiping Fu, Weijin Hu, Yang Xu, Bin Yu, Kai Liu, Hua Wang, Xixiang Zhang, and Fei Xue, “Proton-mediated reversible switching of multiple metastable ferroelectric phases with low operation voltages”, Science Advances, 9, eadg4561 (2023).
  9. C. J. Jensen, A. Quintana, P. Quarterman, A. J. Grutter, P. P. Balakrishnan, H. R. Zhang, A. Davydov, X.X. Zhang, and Kai Liu, “Nitrogen-Based Magneto-Ionic Manipulation of Exchange Bias in CoFe/MnN Heterostructures”, ACS Nano, 17, 6745-6753 (2023); arXiv:2303.14350.
  10. P. E. Siegfried, H. Bhandari, J. Qi, R. Ghimire, J. Joshi, Z. T. Messegee, W. Beeson, Kai Liu, M. Ghimire, Y. L. Dang, H. R. Zhang, A. Davydov, X. Y. Tan, P. Vora, I. I. Mazin, and N. J. Ghimire, “CoTe2: A quantum critical Dirac metal with strong spin fluctuations”, Advanced Materials, 35, 2300640 (2023); arXiv:2208.13334.
  11. H. Chen, S. Asif, K. Dolui, Y. Wang, J. T. Isaza, V. M. L. Durga Prasad Goli, M. Whalen, X. H. Wang, Z. J. Chen, H. Q. Zhang, Kai Liu, D. Jariwala, B. Jungfleisch, C. Chakraborty, A. F. May, M. A. McGuire, B. K. Nikolic, J. Q. Xiao, M. J.H. Ku, “Above-room-temperature ferromagnetism in thin van der Waals flakes of cobalt-substituted Fe5GeTe2“, ACS Applied Materials and Interfaces, 15, 3287−3296 (2023); arXiv:2206.07027.
  12. C. H. Zhang, C. Liu, J.W. Zhang, Y. Y. Yuan, Y. Wen, Y. Li, D. X. Zheng, Q. Zhang, Z. P. Hou, G. Yin, Kai Liu, Y. Peng, and X. X. Zhang “Room-temperature magnetic skyrmions and large topological Hall effect in chromium telluride engineered by self-intercalation”, Advanced Materials, 35, 2205967 (2023).
  13. D. Bhattacharya, Z. J. Chen, C. J. Jensen, C. Liu, E. C. Burks, D. A. Gilbert, X.X. Zhang, G. Yin, and Kai Liu, “3D Interconnected Magnetic Nanowire Networks as Potential Integrated Multistate Memristors”, Nano Letters, 22, 10010 (2022); arXiv:2211.09687
  14. A. Quintana, A. A. Firme, C. J. Jensen, D. X. Zheng, X. X. Zhang, and Kai Liu, “Hydroxide-based magneto-ionics: electric-field control of reversible paramagnetic-to-ferromagnetic switch in α-Co(OH)2 films”, Journal of Materials Chemistry C, 10, 17145-17153 (2022); arXiv:2211.01191.
  15. D. A. Gilbert, M. Y. Im, Kai Liu, and P. Fischer, “Element-Specific First Order Reversal Curves Measured by Magnetic Transmission X-ray Microscopy”, APL Materials, 10, 111105 (2022); arXiv:2210.05739.
  16. P. Quarterman, Y. B. Fan, Z. J. Chen, C. J. Jensen, R. V. Chopdekar, D. A. Gilbert, M. D. Stiles, J. A. Borchers, Kai Liu, L. Q. Liu, and A. J. Grutter, “Probing antiferromagnetic coupling in magnetic insulator/metal heterostructures”, Physical Review Materials, 6, 094418 (2022).
  17. P. K. Greene, Y. Hu, Z. Q. Qiu, and Kai Liu, “Antiferromagnet Thickness Dependence and Rotatable Spins in Exchange Biased CoO/Fe Films”, Journal of Magnetism and Magnetic Materials, 563, 169898 (2022).
  18. C. H. Zhang, C. Liu, S. F. Zhang, B. J. Zhou, C. S. Guan, Y. C. Ma, H. Algaidi, D. X. Zheng, Y. Li, J. W. Zhang, P. Li, Z. P. Hou, G. Yin, Kai Liu, Y. Peng and X. X. Zhang, “Magnetic skyrmions with unconventional helicity polarization in a van der Waals ferromagnet”, Advanced Materials, 34, 2204163 (2022).
  19. G. Chen, C. Ophus, R. Lo Conte, R. Wiesendanger, G. Yin, A. K. Schmid, and Kai Liu, “Ultrasensitive Sub-monolayer Palladium Induced Chirality Switching and Topological Evolution of Skyrmions”, Nano Letters, 22, 6678-6684 (2022); arXiv:2206.12069.
  20. D. X. Zheng, J. Lan, B. Fang, Y. Li, C. Liu, J. O. Ledesma-Martin, Y. Wen, P. Li, C. H. Zhang, Y. C. Ma, Z. Q. Qiu, Kai Liu, A. Manchon, and X. X. Zhang, “High-efficiency magnon-mediated magnetization switching in all-oxide heterostructures with perpendicular magnetic anisotropy”, Advanced Materials, 34, 2203038 (2022).
  21. Y. J. Zhang, V. Kalappattil, C. P. Liu, M. Mehraeen, S. S.-L. Zhang, J. J. Ding, U. Erugu, Z. J. Chen, J. F. Tian, Kai Liu, J. K. Tang, and M. Z. Wu, “Large Magneto-Electric Resistance in the Topological Dirac Semimetal alpha-Sn,” Science Advances, 8, eabo0052 (2022).
  22. P. Scholzen, G. Lang, A. S. Andreev, A. Quintana, J. Malloy, C. J. Jensen, Kai Liu, and J.-B. d’Espinose de Lacaillerie, “Magnetic structure and internal field nuclear magnetic resonance of cobalt nanowires”, Physical Chemistry Chemical Physics, 24, 11898-11909 (2022).
  23. B. Fang, L. Sánchez-Tejerina San José, A. T. Chen, Y. Li, D. X. Zheng, Y. C. Ma, H. Algaidi, Kai Liu, G. Finocchio, and Xixiang Zhang, “Electrical manipulation of exchange bias in an antiferromagnet / ferromagnet-based device via spin–orbit torque”, Advanced Functional Materials, 32, 2112406 (2022).
  24. Gong Chen, Colin Ophus, Alberto Quintana, Heeyoung Kwon, Changyeon Won, Haifeng Ding, Yizheng Wu, Andreas Schmid, Kai Liu, “Reversible writing/deleting of magnetic skyrmions through hydrogen adsorption/desorption“, Nature Communications, 13, 1350 (2022).
  25. Y. Y. Wu, B. Francisco, Z. J. Chen, W. Wang, Y. Zhang, C. H. Wan, X. F. Han, H. Chi, Y. S. Hou, A. Lodesani, G. Yin, Kai Liu, Y. T. Cui, K. L. Wang, J. S. Moodera, “A van der Waals Interface Hosting Two Groups of Magnetic Skyrmions”, Advanced Materials, 34, 2110583 (2022).
  26. N. Tang, J. W. Liao, S. T. Chui, T. Ziman, A. J. Grutter, Kai Liu, C. H. Lai, B. J. Kirby, and D. A. Gilbert, “Controlling magnetic configuration in soft-hard bilayers probed by polarized neutron reflectometry”, APL Materials, 10, 011107 (2022); arXiv:2111.12191.
  27. P. Liu, C. X. Liu, Z. Wang, M. Huang, G. J. Hu, J. X. Xiang, C. Feng, C. Chen, Z. W. Ma, X. D. Cui, H. L. Zeng, Z. G. Sheng, Y. L. Lu, G. Yin, G. Chen, Kai Liu, B. Xiang, “Planar-symmetry-breaking induced antisymmetric magnetoresistance in van der Waals ferromagnet Fe3GeTe2”, Nano Research,  15,  2531–2536 (2022).
  28. C. J. Jensen, A. Quintana, M. Sall, L. Herrera Diez, J. W. Zhang, X. X. Zhang, D. Ravelosona, and Kai Liu, “Ion irradiation and implantation modifications of magneto-ionically induced exchange bias in Gd/NiCoO”, Journal of Magnetism and Magnetic Materials, 540, 168479 (2021); arXiv: 2108.10295.
  29. G. Chen, M. Robertson, H.Y. Kwon, C.Y. Won, A. K. Schmid, and Kai Liu, “Chirality-induced zigzag domain wall in in-plane magnetized ultrathin films”, Journal of Vacuum Science & Technology A, 39, 053410 (2021); arXiv:2108.08427.
  30. P. D. Murray, C. J. Jensen, A. Quintana, J.W. Zhang, X.X. Zhang, A. J. Grutter, B. J. Kirby, and Kai Liu, “Electrically Enhanced Exchange Bias via Solid State Magneto-Ionics”, ACS Applied Materials and Interfaces, 13, 38916−38922 (2021); arXiv:2107.12503.
  31. E. Garskaite, S. Stoll, F. Forsberg, H. Lycksam, Z. Stankeviciute, A. Kareiva, A. Quintana, C. J. Jensen, Kai Liu, D. Sandberg, “The accessibility of cell wall in Scots pine (Pinus sylvestris L.) sapwood to colloidal Fe3O4 nanoparticles”, ACS Omega, 6, 21719-21729 (2021).
  32. G. Chen, M. Robertson, M. Hoffman, C. Ophus, A. L. F. Cauduro, R. Lo Conte, H. F. Ding, R. Wiesendanger, S. Blügel, A. K. Schmid, and Kai Liu, “Observation of hydrogen-induced Dzyaloshinskii-Moriya interaction and reversible switching of magnetic chirality”, Physical Review X, 11, 021015 (2021).
  33. J. Malloy, A. Quintana, C. J. Jensen, and Kai Liu, “Efficient and Robust Metallic Nanowire Foams for Deep Submicrometer Particulate Filtration”, Nano Letters, 21, 2968-2974 (2021).
  34. C. J. Perez, Z. J. Chen, W. B. Beeson, S. Chanakain, Kai Liu, S. K. Bux, and S. M. Kauzlarich, “A Chemical Route to Yb14MgSb11 Composites with Nano-Sized Iron Inclusions for Reduction of Thermal Conductivity”, ACS Applied Energy Materials, 4, 3748–3756 (2021).
  35. D. A. Gilbert, P. D. Murray, J. De Rojas, R. K. Dumas, J. E. Davies, and Kai Liu, “Reconstructing phase-resolved hysteresis loops from first-order reversal curves”, Scientific Reports, 11, 4018 (2021); arXiv:2012.11041.
  36. E. C. Burks, D. A. Gilbert, P. D. Murray, C. Flores, T. E. Felter, S. Charnvanichborikarn, S. O. Kucheyev, J. Colvin, G. Yin and Kai Liu, “3D Nanomagnetism in Low Density Interconnected Nanowire Networks”, Nano Letters, 21, 716-722 (2021); arXiv:2011.13468.
  37. J. de Rojas, A. Quintana, A. Lopeandía, J. Salguero, B. Muñiz, F. Ibrahim, M. Chshiev, M. O. Liedke, M. Butterling, A. Wagner, V. Sireus, L. Abad, C. J. Jensen, Kai Liu, J. Nogués, J. L. Costa-Krämer, E. Menéndez, and J. Sort, “Voltage-driven motion of nitrogen ions: a new paradigm for magneto-ionics”, Nature Communications, 11, 5871 (2020).
  38. H. Y. Kwon, H. G. Yoon, C. Lee, G. Chen, Kai Liu, A. K. Schmid, Y. Z. Wu, J. W. Choi, and C. Won, “Magnetic Hamiltonian parameter estimation using deep learning techniques”, Science Advances, 6, eabb0872 (2020).
  39. G. Chen, A. Mascaraque, H.Y. Jia, B. Zimmermann, M. Robertson, R. Lo Conte, M. Hoffmann, M.A.G. Barrio, H.F. Ding, R. Wiesendanger, E. Michel, S. Blügel, A. K. Schmid, and Kai Liu, “Large Dzyaloshinskii–Moriya interaction induced by chemisorbed oxygen on a ferromagnet surface” Science Advances, 6, eaba4924 (2020).
  40. M. Robertson, C. J. Agostino, G. Chen, S. P. Kang, A. Mascaraque, E. G. Michel, C.Y. Won, Y. Z. Wu, A. K. Schmid, and Kai Liu, “In-plane Néel wall chirality and orientation of interfacial Dzyaloshinskii-Moriya vector in magnetic films”, Physical Review B, 102, 024417 (2020).
  41. R. Lo Conte, A. K. Nandy, G. Chen, A. L. Fernandes Cauduro, A. Maity, C. Ophus, Z. J. Chen, A. T. N’Diaye, Kai Liu, A. K. Schmid, and R. Wiesendanger, “Tuning the properties of zero-field room temperature ferromagnetic skyrmions by interlayer exchange coupling”, Nano Letters, 20, 4739−4747 (2020).
  42. Z. L. Wang, X. D. Xue, H. W. Lu, Y. X. He, Z. W. Lu, Z. J. Chen, Y. Yuan, N. Tang, C. A. Dreyer, L. Quigley, N. Curro, K. S. Lam, J. H. Walton, T. Y. Lin, A. Y. Louie, D. A. Gilbert, Kai Liu, K. W. Ferrara, and Y. P. Li, “Two-way magnetic resonance tuning and enhanced subtraction imaging for non-invasive and quantitative biological imaging”, Nature Nanotechnology, 15, 482-490 (2020).
  43. J. Xu, F. Lou, M.W. Jia, G. Chen, C. Zhou, Q. Li, Kai Liu, A. K. Schmid, H. J. Xiang, and Y. Z. Wu, “Electron quantum interference in epitaxial antiferromagnetic NiO thin films”, AIP Advances, 10, 045204 (2020).
  44. C. J. Perez, X. Qi, Z. J. Chen, S. K. Bux, S. Chanakain, B. Li, Kai Liu, R. Dhall, K. C. Bustillo, and S. M. Kauzlarich, “Improved Power Factor and Mechanical Properties of Composites of Yb14MgSb11 with Iron”, ACS Applied Energy Materials, 3, 2147-2159 (2020).
  45. P. D. Murray, D. A. Gilbert, A. J. Grutter, B. J. Kirby, D. Hernandez-Maldonado, M. Varela, Z. E. Brubaker, R. V. Chopdekar, V. Taufour, R. J. Zieve, J. R. Jeffries, E. Arenholz, Y. Takamura,J. A. Borchers, and Kai Liu, “Interfacial-Redox-Induced Tuning of Superconductivity in YBa2Cu3O7-δ”, ACS Applied Materials & Interfaces, 12, 4741-4748 (2020).
  46. J. Y. Shen, J. Lyu, J. Z. S. Gao, C. Z. Chen, C. W. Cho, L. Pan, Z. J. Chen, Kai Liu, Y. J. Hu, K. Y. Yip, S. K. Goh, Q. L. He, K. L. Wang, K. T. Law, and R. Lortz, “Spectroscopic evidence of chiral Majorana modes in a quantum anomalous Hall insulator / superconductor heterostructure”, PNAS, 117, 238-242 (2020).
  47. G. Rippy, L. Trinh,  A. M. Kane, A. L. Ionin, M. S. Lee, R. V. Chopdekar, J. M. Christiansen-Salameh, D. A. Gilbert, A. J. Grutter, P. D. Murray, M. Holt, Z.H. Cai, Kai Liu, Y. Takamura, and R. Kukreja, “X-ray nanodiffraction studies of ionically-controlled nanoscale phase separation in cobaltites”, Physical Review Materials (Rapid Communications), 3, 082001(R) (2019).
  48. S. Karayev, P. Murray, D. Khadka, T. Thapaliya, Kai Liu, and S. X. Huang, “Interlayer Exchange Coupling in Pt/Co/Ru and Pt/Co/Ir superlattices”, Physical Review Materials (Rapid Communications), 3, 041401(R) (2019).
  49. C. Zhou, G. Chen, J. Xu, J.H. Liang, Kai Liu, A. K. Schmid, and Y. Z. Wu, “Magnetic domain wall contrast under zero domain contrast conditions in spin polarized low energy electron microscopy”, Ultramicroscopy, 200, 132-138 (2019).
  50. R. Bläsing, T. P. Ma, S. H. Yang, C. Garg, F. K. Dejene, A. T. N’Diaye, G. Chen, Kai Liu, and S. S. P. Parkin, “Exchange coupling torque in ferrimagnetic Co/Gd bilayer maximized near angular momentum compensation temperature”, Nature Communications, 9, 4984 (2018).
  51. A. Quintana, E. Menéndez, M. O. Liedke, V. Sireus, P. Torruella, S. Estradé, F. Peiró, C. Detavernier, P. Murray, D. A. Gilbert, Kai Liu, E. Pellicer, J. Nogués, and J. Sort, “Voltage-controlled ON-OFF ferromagnetism at room temperature in a single metal oxide film”, ACS Nano, 12, 10291-10300 (2018).
  52. D. A. Gilbert, A. J. Grutter, P. Murray, R. V. Chopdekar, A. M. Kane, A. L. Ionin, S. R. Spurgeon, B. J. Kirby, B. B. Maranville, A. T. N’Diaye, A. Mehta, E. Arenholz, Kai Liu, Y. Takamura, and J. A. Borchers, “Ionic Tuning of Cobaltites at the Nanoscale”, Physical Review Materials, 2, 104402 (2018).
  53. Q. Li, M. Yang, C. Gong, R. V. Chopdekar, A. T. N’Diaye, J. Turner, G. Chen,A. Scholl, P. Shafer, E. Arenholz, A. K. Schmid, S. Wang, Kai Liu, N. Gao,A. S. Admasu, S.-W. Cheong, C. Y. Hwang, J. Li, F. Wang,X. Zhang, and Z. Q. Qiu, “Patterning-induced ferromagnetism of Fe3GeTe2 van der Waals materials beyond room temperature”, Nano Letters, 18, 5974-5980 (2018).
  54. H. X. Yang, G. Chen, A. A. C. Cotta, A. T. N’Diaye, S. A. Nikolaev, E. A. Soares, W. A. A. Macedo, Kai Liu, A. K. Schmid, A. Fert, and M. Chshiev, “Significant Dzyaloshinskii-Moriya Interaction at Graphene-Ferromagnet Interfaces due to the Rashba-effect”, Nature Materials, 17, 605-609 (2018).
  55. D. A. Gilbert, E. C. Burks,S. V. Ushakov, P. Abellan, I. Arslan, T. E. Felter, A. Navrotsky, and Kai Liu, “Tunable Low Density Palladium Nanowire Foams”, Chemistry of Materials, 29, 9814–9818 (2017).
  56. D. A. Gilbert, J. G. Ramirez, T. Saerbeck, J. Trastoy, I. K. Schuller, Kai Liu, and J. de la Venta, “Growth-Induced In-Plane Uniaxial Anisotropy in V2O3/Ni films”, Scientific Reports, 7, 13471 (2017).
  57. S. Y. Huang, C. Zhou, G. Chen, H. Y. Shen, A. K. Schmid, Kai Liu, and Yizheng Wu, “Stabilization and current-induced motion of antiskyrmion in the presence of anisotropic Dzyaloshinskii-Moriya interaction”, Physical Review B, 96, 144412 (2017).
  58. L. Sun, C. Zhou, J. H. Liang, T. Xing, N. Lei, P. Murray, Kai Liu, C. Won, and Y. Z. Wu, “Magnetization reversal in Kagome artificial spin ice studied by first-order reversal curves”, Physical Review B, 96, 144409 (2017).
  59. J. A. De Toro, M. Vasilakaki, S. S. Lee, M. S. Andersson, P. S. Normile, N. Yaacoub, P. Murray, E. H. Sánchez, P. Muñiz, D. Peddis, R. Mathieu, Kai Liu, J. Geshev, K. N. Trohidou, J. Nogués, “Remanence plots as a probe of spin disorder in magnetic nanoparticles”, Chemistry of Materials, 29, 8258−8268 (2017).
  60. W. J. Jiang, G. Chen, Kai Liu, J. D. Zang, S. G. E. te velthuis and A. Hoffmann, “Skyrmions in magnetic multilayers”, Physics Reports, 704, 1-49 (2017).
  61. M. K. Frampton, J. Crocker, D. A. Gilbert, N. Curro, Kai Liu, J. A. Schneeloch, G. Gu, and R. J. Zieve, “First Order Reversal Curve of the Magneto-Structural Phase Transition in FeTe”, Physical Review B, 95, 214402 (2017).
  62. G. Chen, S. P. Kang, C. Ophus, A. T. N’Diaye, H. Y. Kwon, R. T. Qiu, C. Y. Won, Kai Liu, Y. Z. Wu, and A. K. Schmid, “Out-of-plane chiral domain wall spin-structures in ultrathin in-plane magnets”, Nature Communications, 8, 15302 (2017).
  63. L. Yu, Z. Y. Yan, H. C. Yang, X. Z. Chai, B. Q. Li, S. Moeendarbari, Y. W. Hao, D. Zhang, G. Feng, P. Han, D. A. Gilbert, Kai Liu, K. S. Buchanan, and X. M. Cheng, “Magnetization reversal of three-dimensional nickel anti-sphere arrays”, IEEE Magnetics Letters, 8, 4100104, doi: 10.1109/LMAG.2016.2616325 (2017). 
  64. N. Kazem, J. Cooley, E. C. Burks,  Kai Liu, and S. M. Kauzlarich, “Synthesis, Characterization and Low Temperature Transport Properties of Eu11-xYbxCd6Sb12 Solid-Solution Zintl Phases”, Inorganic Chemistry,  55, 12230–12237 (2016).
  65. D. A. Gilbert, J.W. Liao, B. J. Kirby, M. Winklhofer, C. H. Lai, and Kai Liu, “Magnetic Yoking and Tunable Interactions in FePt-Based Hard/Soft Bilayers”, Scientific Reports, 6, 32842 (2016).
  66. Q. T. Zhang, P. Murray, L. You, C. H. Wan, X. Zhang, W. J. Li, Z. H. Yuan, H. Wu, J. L. Wang, Kai Liu, and X. F. Han, “Magnetic fingerprint of interfacial coupling between CoFe and nanoscale ferroelectric domain walls”, Applied Physics Letters, 109, 082906 (2016).
  67. D. A. Gilbert, A. J. Grutter, E. Arenholz, Kai Liu, B. J. Kirby, J. A. Borchers, B. B. Maranville, “Structural and Magnetic Depth Profiles of Voltage-Controlled Magneto-Ionic Heterostructures Beyond the Interface Limit”, Nature Communications, 7, 12264 (2016).
  68. R. Cuadrado, Kai Liu, T. J. Klemmer, and R. W. Chantrell, “In-plane/out-of-plane disorder influence on the magnetic anisotropy of Fe1-yMnyPt-L10 bulk alloy”, Applied Physics Letters, 108, 123102 (2016).
  69. D. A. Gilbert, J. Olamit, R. K. Dumas, B. J. Kirby, A. J. Grutter, B. B. Maranville, E. Arenholz, J. A. Borchers, and Kai Liu, “Controllable Positive Exchange Bias via Redox-Driven Oxygen Migration”, Nature Communications, 7, 11050 (2016).
  70. A. J. Grutter, D. A. Gilbert, U. S. Alaan, E. Arenholz, B. B. Maranville, J. A. Borchers, Y. Suzuki,  Kai Liu, and B. J. Kirby,  “Reversible Control of Magnetism in La0.67Sr0.33MnO3 through Chemically-Induced Oxygen Migration”, Applied Physics Letters, 108, 082405 (2016).
  71. F. Chen, F. Wang, F. Jia, J. Li, Kai Liu, S. Huang, Z. Luan, D. Wu, Y. Chen, J. Zhu, R. W. Peng, and M. Wang, “Periodic spin configuration in single-crystalline cobalt filaments”, Physical Review B, 93, 054405 (2016).
  72. D. A. Gilbert, B. B. Maranville, A. L. Balk, B. J. Kirby, P. Fischer, D. T. Pierce, J. Unguris, J. A. Borchers, and Kai Liu, “Realization of Ground State Artificial Skyrmion Lattices at Room Temperature”, Nature Communications, 6, 8462 (2015).
  73. D. A. Gilbert, L. Ye, A. Varea, S. Agramunt-Puig, N. del Valle, C. Navau, J. F. López-Barbera,K. S. Buchanan, A. Hoffmann, A. Sánchez, J. Sort, Kai Liu, and J. Nogués, “A New Reversal Mode in Exchange Coupled Antiferromagnetic/Ferromagnetic Disks: Distorted Viscous Vortex”, Nanoscale, 7, 9878 – 9885 (2015).
  74. W. J. Li, D. W. Shi, P. K. Greene, K. Javed, Kai Liu, and X. F. Han, “Enhanced exchange bias in IrMn/CoFe deposited on self-organized hexagonally patterned nanodots”, Applied Physics Letters, 106, 072409 (2015).
  75. B. J. Kirby, P. K. Greene, B. B. Maranville, J. E. Davies, and Kai Liu, “Effective anisotropy gradient in pressure graded [Co/Pd] multilayers”, Journal of Applied Physics, 117, 063905 (2015).
  76. D. W. Shi, P. K. Greene, P. Liu, K. Javed, Kai Liu, and X. F. Han, “Co/Pt multilayers on self-organized hexagonal patterned nanodots”, IEEE Transactions on Magnetics, 50, 2303004 (2014).
  77. S. Nemšák,  A. Shavorskiy, O. Karslioglu, I. Zegkinoglou, P. K. Greene, E. C. Burks, A. Rattanachata, C. S. Conlon, A. Keqi, F. Salmassi, E. M. Gullikson, S.-H. Yang, Kai Liu, H. Bluhm, and C. S. Fadley, “Concentration and chemical-state profiles at heterogeneous interfaces with sub-nm accuracy from standing-wave ambient-pressure photoemission”, Nature Communications, 5, 5441, (2014).
  78. M. Kaur, W. Jiang, Y. Qiang, E. C. Burks, Kai Liu, F. Namavar, and J. McCloy, “Exchange bias in polycrystalline magnetite films made by ion-beam assisted deposition”, Journal of Applied Physics, 116, 173902 (2014).
  79. R. K. Dumas, P. K. Greene, D. A. Gilbert, L. Ye, C. Zha, J. Åkerman, and Kai Liu, “Accessing Different Spin-Disordered States using First Order Reversal Curves”, Physical Review B, 90, 104410 (2014).  
  80. D. A. Gilbert, J. W. Liao, L. W. Wang, J. W. Lau, T. J. Klemmer,J. U. Thiele, C. H. Lai, and Kai Liu, “Probing the A1 to L10 Transformation in FeCuPt Using the First Order Reversal Curve Method”, APL Materials, 2, 086106 (2014).
  81. P. K. Greene, J. Osten, Kilian Lenz,J. Fassbender, C. Jenkins, E. Arenholz, T. Endo, N. Iwata, and Kai Liu, “Tuning Perpendicular Anisotropy Gradient in Co/Pd Multilayers by Ion Irradiation”, Applied Physics Letters, 105, 072401 (2014).                                        
  82. L. Ma, D. A. Gilbert, V. Neu, R. Schäfer, J. G. Zheng, X. Q. Yan, Z. Shi, Kai Liu, and S. M. Zhou, “Magnetization reversal in perpendicularly magnetized L10 FePd/FePt heretostructures”, Journal of Applied Physics, 116, 033922 (2014).     
  83. G. K. Das, C. S. Bonifacio,J. De Rojas, Kai Liu,K. van Benthem and I. M. Kennedy, “Ultra-long Magnetic Nanochains for Highly Efficient Arsenic Removal from Water”, Journal of Materials Chemistry A, 2, 12974-12981 (2014).
  84. P. K. Greene, B. J. Kirby, J. W. Lau, J. A. Borchers, M. R. Fitzsimmons, and Kai Liu, “Deposition Order Dependent Magnetization Reversal in Pressure Graded Co/Pd films”, Applied Physics Letters, 104, 152401 (2014).                  
  85. D. A. Gilbert, G. T. Zimanyi, R. K. Dumas, M. Winklhofer, A. Gomez, N. Eibagi, J. L. Vicent, and Kai Liu, “Quantitative Decoding of Interactions in Tunable Nanomagnet Arrays Using First Order Reversal Curves”, Scientific Reports, 4, 4204 (2014).
  86. A. M. Thron, P. Greene, Kai Liu, K. van Benthem, “In-Situ Observation of Equilibrium Transitions in Ni films; Agglomeration and Impurity Effects”, Ultramicroscopy, 137, 55-65 (2014).           
  87. J. S. McCloy, W. Jiang, T. Droubay,T. Varga,L. Kovarik, J. Sundararajan, M. Kaur, Y. Qiang, E. Burks, Kai Liu, “Ion irradiation of Fe-Fe oxide core-shell nanocluster films: Effect of interface on stability of magnetic properties”, Journal of Applied Physics, 114, 083903 (2013).            
  88. J. E. Davies, D. A. Gilbert, M. Mohseni, R. K. Dumas, J. Åkerman and Kai Liu, “Reversal mode instability and magnetoresistance in perpendicular (Co/Pd)/Cu/(Co/Ni) pseudo-spin-valves”, Applied Physics Letters, 103, 022409 (2013).                                               
  89. A. Gomez, E. M. Gonzalez, D. A. Gilbert, M. V. Milošević, Kai Liu, J. L. Vicent, “Probing the dynamic response of antivortex, interstitial and trapped vortex lattices on magnetic periodic pinning potentials”, Superconductor Science and Technology, 26, 085018 (2013).
  90. M. S. Pierce, J.E. Davies, J. J. Turner, K. Chesnel, E. E. Fullerton, J. Nam, R. Hailstone, S.D. Kevan, J.B. Kortright, Kai Liu, L.B. Sorensen, B.R. York, and O. Hellwig, “The influence of structural disorder on magnetic domain formation in perpendicular anisotropy thin films”, Physical Review B, 87, 184428 (2013).                                                                     
  91. R. Brandt, R. Rückriem, D. A. Gilbert, F. Ganss, T. Senn, Kai Liu, M. Albrecht, and H. Schmidt, “Size-dependent magnetization switching characteristics and spin wave modes of FePt nanostructures”, Journal of Applied Physics, 113, 203910 (2013).                      
  92. D. A. Gilbert, L.W. Wang, T. Klemmer, Jan-Ulrich Thiele, C. H. Lai, and Kai Liu, “Tuning magnetic anisotropy in (001) oriented (Fe1-xCux)55Pt45 films”, Applied Physics Letters, 102, 132406 (2013); featured in APL Research Highlights and Top Stories, was one of the 15 most accessed APL papers in 2013.           
  93. L. H. Yang, M. Shaughnessy, L. Damewood, C. Y. Fong, and Kai Liu, “Half-metallic hole-doped Mn/Si trilayers”, Journal of Physics D: Applied Physics, 46, 165502 (2013).  
  94. A. Gomez, D. A. Gilbert, E. M. Gonzalez, Kai Liu, J. L. Vicent, “Control of dissipation in superconducting films by magnetic stray fields”, Applied Physics Letters, 102, 052601 (2013).           
  95. B. J. Kirby, M. T. Rahman, R. K. Dumas, J. E. Davies, C. H. Lai, and Kai Liu, “Depth-resolved magnetization reversal in nanoporous perpendicular anisotropy multilayers”, Journal of Applied Physics, 113, 033909 (2013). 
  96. R. K. Dumas, C. P. Li, I. V. Roshchin, I. K. Schuller, and Kai Liu, “Deconvoluting Reversal Modes in Exchange Biased Nanodots”, Physical Review B, 86, 144410 (2012).       
  97. E. A. Osborne, T. Atkins, D. Gilbert, S. M. Kauzlarich, Kai Liu, and A. Y Louie, “Rapid Microwave-Assisted Synthesis of Dextran-Coated Iron Oxide Nanoparticles for Magnetic Resonance Imaging”, Nanotechnology, 23, 215602  (2012).  
  98. R. M. Wong, D. A. Gilbert, Kai Liu, A. Y. Louie, “Rapid Size-Controlled Synthesis of Dex-tran-Coated, 64Cu-Doped Iron Oxide Nanoparticles”, ACS Nano, 6, 3461 (2012).   
  99. J. C. Park, D. A. Gilbert, Kai Liu, and A. Y. Louie, “Microwave enhanced silica encapsulation of magnetic nanoparticles”, Journal of Materials Chemistry, 22, 8449-8454 (2012).                
  100. A. M. Thron, P. Greene, Kai Liu, and K. van Benthem, “Structural Changes during the reaction of Ni thin films with (100) silicon substrates”, Acta Materialia, 60, 2668 (2012).
  101. D. Perez de Lara, F. J. Castaño, B. G. Ng, H. S. Körner, R. K. Dumas, E. M. Gonzalez, Kai Liu, C. A. Ross, I. K. Schuller, J. L. Vicent, “Magnetic pinning of flux lattice in super-conducting-nanomagnet hybrids”, Applied Physics Letters, 99, 182509 (2011).         
  102. Bogdan F. Valcu, Dustin A. Gilbert, and Kai Liu, “Fingerprinting Inhomogeneities in Recording Media using the First Order Reversal Curve Method”, IEEE Transactions on Magnetics, 47, 2988 (2011).
  103. J. E. Davies, P. Morrow, C. L. Dennis, J. W. Lau, B. McMorran, A. Cochran, J. Unguris, R. K. Dumas, P. Greene and Kai Liu,“Reversal of patterned Co/Pd multilayers with graded magnetic anisotropy”, Journal of Applied Physics, 109, 07B909 (2011).                
  104. R. K. Dumas, D. Gilbert, N. Eibagi, Kai Liu, “Chirality control via double vortices in asym-metric Co dots”, Physical Review B (Rapid Communications), 83, 060415 (2011).
  105. X. M. Kou, X. Fan, R. K. Dumas, Q. Lu, Y. P. Zhang, H. Zhu, X. K. Zhang, Kai Liu, and J. Q. Xiao, “Memory effect in magnetic nanowire arrays”,Advanced Materials, 23, 1393 (2011).         
  106. Z.Y. Wang, T. Lin, P. Wei, X. F. Liu, R. K. Dumas, Kai Liu, J. Shi, “Tuning carrier type and density in Bi2Se3 by Ca-doping”, Applied Physics Letters, 97, 042112 (2010).        
  107. J. W. Liao, R. K. Dumas, H. C. Hou, Y. C. Huang, W. C. Tsai, L. W. Wang, D. S. Wang, M. S. Lin, Y. C. Wu, R. Z. Chen, J. L. Lee, J. W. Lau, Kai Liu, and C. H. Lai, “Simultaneous enhancement of anisotropy and grain segregation in CoPtCr-SiO2 perpendicular recording media by a MnRu intermediate layer”, Physical Review B, 82, 014423 (2010).      
  108. B. J. McMorran, A. C. Cochran, R. K. Dumas, Kai Liu, P. Morrow, D. T. Pierce, and J. Unguris, “Measuring the effects of low energy ion milling on the magnetization of Co/Pd multilayers using scanning electron microscopy with polarization analysis”, Journal of Applied Physics, 107, 09D305 (2010).
  109. B. J. Kirby, J. E. Davies,Kai Liu, S. M. Watson, G. T. Zimanyi, R. D. Shull, P. A. Kienzle, and J. A. Borchers, “Vertically Graded Anisotropy in Co/Pd Multilayers”, Physical Review B (Rapid Communications), 81, 100405 (2010).
  110. D. Perez de Lara, F. J. Castaño, B. G. Ng, R. K. Dumas, E. M. Gonzalez, Kai Liu, C. A. Ross, I. K. Schuller, and J. L. Vicent, “Rocking ratchet induced by pure magnetic potentials with broken reflection symmetry”, Physical Review B, 80, 224510 (2009).
  111. R. K. Dumas, Thomas Gredig, Chang-Peng Li, Ivan K. Schuller and Kai Liu, “Angular Dependence of Vortex Annihilation Fields in Asymmetric Co Nanodots”, Physical Review B, 80, 014416 (2009).
  112. M. Shaughnessy, C. Y. Fong, Ryan Snow, Kai Liu, J. E. Pask, and L. H. Yang, “Origin of large moments in MnxSi1-x at small x” Applied Physics Letters 95, 022515 (2009).  
  113. J. E. Davies, O. Hellwig, E. E. Fullerton, M. Winklhofer, R. D. Shull, and Kai Liu, “Frustration Driven Stripe Domain Formation in Co/Pt Multilayer Films”, Applied Physics Letters, 95, 022505 (2009).             
  114. C. Leighton, D. D. Stauffer, Q. Huang, Y. Ren, B. Toby, S. El-Khatib, M. A. Torija, J. Wu, J. W. Lynn, L. Wang, N. A. Frey, H. Srikanth, J. E. Davies, Kai Liu and J. F. Mitchell, “Coupled structural / magnetocrystalline anisotropy transitions in the doped perovskite cobaltite Pr1-xSrxCoO3”, Physical Review B, 79, 214420 (2009).
  115. Z. Ma, D. Dosev, M. Nichkova, R. K. Dumas, S. J. Gee, B. D. Hammock, Kai Liu and I. M. Kennedy, “Synthesis and characterization of multifunctional silica core–shell nanocomposites with magnetic and fluorescent functionalities”, Journal of Magnetism and Magnetic Materials, 321, 1368–1371 (2009).
  116. B. J. Kirby, S. M. Watson, J. E. Davies, G. T. Zimanyi, Kai Liu, R. D. Shull, and J. A. Borchers, “Direct Observation of Magnetic Gradient in in Co/Pd Pressure-Graded Media”, Journal of Applied Physics, 105, 07C929 (2009).
  117. R. Morales, Z-P. Li, J. Olamit, Kai Liu, J. M. Alameda, I. K. Schuller, “Effect of the antiferromagnet bulk spin structure on exchange bias”, Physical Review Letters, 102, 097201 (2009).  
  118. M. Tofizur Rahman, R. K. Dumas, Nasim Eibagi, Nazmun N Shams, Yun-Chung Wu, Kai Liu, and C.-H. Lai, “Controlling magnetization reversal in Co/Pt nanostructures with perpendicular anisotropy”, Applied Physics Letters, 94, 042507 (2009).                 
  119. Jared Wong, Peter Greene, Randy K. Dumas, Kai Liu, “Probing Magnetic Configurations in Co/Cu Multilayered Nanowires”, Applied Physics Letters, 94, 032504 (2009).      
  120. W.A.A. Macedo, B. Sahoo, J. Eisenmenger, M.D. Martins, W. Keune, V. Kuncser, R. Röhlsberger, O. Leupold, R. Rüffer, J. Nogués, Kai Liu, K. Schlage, and Ivan K. Schuller, “Direct measurement of depth-dependent Fe spin structure during magnetization reversal in Fe/MnF2 exchange-coupled bilayers”, Physical Review B, 78, 224401 (2008).       
  121. C.S. Du, J. Yun, R. K. Dumas, X. Yuan, Kai Liu, N. D. Browning and Ning Pan, “Three-dimensionally Intercrossing Mn3O4 Nanowires”, Acta Materialia, 56, 3516-3522 (2008).                      
  122. C. Y. Fong, M. C. Qian, Kai Liu, L. H. Yang, and J. E. Pask, “Design of Spintronic Materials with Simple Structures”, Journal of Nanoscience and Nanotechnology, 8, 3652–3660 (2008).
  123. M. Winklhofer, R. K. Dumas, and Kai Liu, “Identifying reversible and irreversible magnetization changes in prototype patterned media using first- and second-order reversal curves”, Journal of Applied Physics, 103, 07C518 (2008).
  124. J. E. Davies, O. Hellwig, E. E. Fullerton, and Kai Liu, “Temperature Dependent Magnetization Reversal in (Co/Pt)/Ru Multilayers”, Physical Review B, 77, 014421 (2008).
  125. R. K. Dumas, Kai Liu, C. P. Li, I. V. Roshchin, and I. K. Schuller, “Temperature Induced Single Domain – Vortex State Transition in sub-100nm Fe Nanodots”, Applied Physics Letters, 91, 202501 (2007).
  126. R. K. Dumas, C. P. Li, I. V. Roshchin, I. K. Schuller, and Kai Liu, “Magnetic fingerprints of sub-100 nm Fe nanodots”, Physical Review B, 75, 134405 (2007).                  
  127. M. S. Pierce, C. R. Buechler, L.B. Sorensen, S.D. Kevan, E.A. Jagla, J.M. Deutsch, T. Mai, O. Narayan, J. E. Davies, Kai Liu, G.T. Zimanyi, H. G. Katzberger, O. Hellwig, E. E. Fullerton, P. Fischer, and J. B. Kortright, “Disorder induced magnetic memory: Experiments and theories”, Physical Review B, 75, 144406 (2007).         
  128. J. Olamit and Kai Liu, “Rotational hysteresis of the exchange anisotropy direction in Co/FeMn thin films”, Journal of Applied Physics, 101, 09E508 (2007).          
  129. A. Lazicki, C.-S. Yoo, W. J. Evans, H. Cynn, W. E. Pickett, J. Olamit, Kai Liu, Y. Ohishi, “Search for superconductivity in LiBC at high pressure”, Physical Review B, 75, 054507 (2007).              
  130. D. Dosev, M. Nichkova, R. K. Dumas, S. J. Gee, B. D. Hammock, Kai Liu, and I. M. Kennedy, “Magnetic/luminescent core/shell particles synthesized by spray pyrolysis and their application in immunoassays with internal standard”, Nanotechnology, 18, 055102 (2007).               
  131. J. Olamit, Kai Liu, Z. P. Li, and I. K. Schuller, “Irreversibility of magnetization rotation in exchange biased Fe/epitaxial-FeF2 thin films”, Applied Physics Letters, 90, 032510 (2007).
  132. B. Sahoo, W. A. A. Macedo, W. Keune, V. Kuncser, J. Eisenmenger, J. Nogués, I. K. Schuller, I. Felner, Kai Liu, and R. Röhlsberger, “Mössbauer spectroscopical investigation of the exchange biased Fe/MnF2 interface”, Hyperfine Interactions, 169, 1371 (2006).
  133. R. Morales, Z. P. Li, O. Petracic, X. Batlle, I. K. Schuller, J. Olamit, Kai Liu,  “Magnetization depth-dependence in exchange-biased thin films”, Applied Physics Letters, 89, 072504 (2006).
  134. Z. P. Li, O. Petracic, R. Morales, J. Olamit, X. Batlle, Kai Liu, I. K. Schuller, “Origin of asymmetric reversal in exchange biased bilayers”, Physical Review Letters, 96, 217205 (2006).
  135. E. Arenholz, Kai Liu, Z. P. Li, I. K. Schuller, “Magnetization reversal of uncompensated Fe moments in exchange biased Ni/FeF2 bilayers”, Applied Physics Letters, 88, 072503 (2006).  
  136. S. Cho, A. M. Shahin, G. J. Long, J. E. Davies, Kai Liu, F. Grandjean, and S. M. Kauzlarich, “A magnetic and Mössbauer spectral study of core/shell structured Fe/Au nanoparticles”, Chemistry of Materials, 18, 960-967 (2006).
  137. J. Olamit, Z. P. Li, I. K. Schuller, and Kai Liu, “Angular dependence of exchange anisotropy on cooling field in ferromagnet/fluoride thin films”, Physical Review B, 73, 024413 (2006).
  138. M. C. Qian, C. Y. Fong, Kai Liu, W. E. Pickett, J. E. Pask, and L. H. Yang, “Half-metallic digital ferromagnetic heterostructure composed of a delta-doped layer of Mn in Si”, Physical Review Letters,  96, 027211 (2006).
  139. J. E. Davies, J. Wu, C. Leighton, and Kai Liu, “Magnetization reversal and nanoscopic magnetic phase separation in La1-xSrxCoO3”, Physical Review B, 72, 134419 (2005). 
  140. F. E. Osterloh, H. Hiramatsu, R. K. Dumas, and Kai Liu, “Fe3O4-LiMo3Se3 nanoparticle clusters as superparamagnetic nanocompasses”, Langmuir, 21, 9709 (2005).         
  141. E. Arenholz and Kai Liu, “Angular dependence of the magnetization reversal in exchange biased Fe/MnF2”, Applied Physics Letters, 87, 132501 (2005).
  142. S. M. Gravano, R. K. Dumas, Kai Liu, and T. E. Patten, “Methods for the surface functionalization of g-Fe2O3 nanoparticles with initiators for atom transfer radical polymerization and formation of core-shell inorganic-polymer structures”, Journal of Polymer Science A, 43, 3675 (2005).
  143. J. Olamit, E. Arenholz, Z. P. Li, O. Petracic, I. V. Roshchin, R. Morales, X. Batlle, I. K. Schuller,and Kai Liu,  “Loop bifurcation and magnetization rotation in exchange biased Ni/FeF2”, Physical Review B, 72, 012408 (2005).
  144. J. E. Davies, O. Hellwig, E. E. Fullerton, J. S. Jiang, S. D. Bader, G. T. Zimanyi, and Kai Liu, “Anisotropy-dependence of irreversible switching in Fe/SmCo and FeNi/FePt spring magnet films”, Applied Physics Letters, 86, 262503 (2005).
  145. S. Cho, J. C. Idrobo, J. Olamit, Kai Liu, N. D. Browning, and S. M. Kauzlarich, “Growth mechanisms and oxidation-resistance of Au-coated Fe nanoparticles”, Chemistry of Materials, 17, 3181-3186 (2005).
  146. J. Y. Kim, F. E. Osterloh, H. Hiramatsu, R. K. Dumas, and Kai Liu, “Synthesis and real-time magnetic manipulation of a biaxial superparamagnetic colloid”, Journal of Physical Chemistry B, 109, 11151-11157 (2005).
  147. Y. M. Wang, A. M. Hodge, J. Biener, A. V. Hamza, D. Barnes, Kai Liu, and T. G. Nieh,  “Deformation twinning during nanoindentation of nanocrystalline Ta”, Applied Physics Letters, 86, 101915 (2005).
  148. M. S. Pierce, C. R. Buechler, L. B. Sorensen, J. J. Turner, S. D. Kevan, E. A. Jagla, J. M. Deutsch, T. Mai, O. Narayan, J. E. Davies, Kai Liu, J. Hunter Dunn, K. M. Chesnel, J. B. Kortright, O. Hellwig, and E. E. Fullerton, “Disorder-induced microscopic magnetic memory”, Physical Review Letters, 94, 017202 (2005).
  149. J. E. Davies, O. Hellwig, E. E. Fullerton,G. Denbeaux, J. B. Kortright and Kai Liu, “Magnetization reversal of Co/Pt multilayers: microscopic origin of high field magnetic irreversibility”, Physical Review B, 70, 224434 (2004).                                       
  150. W. A. A. Macedo, B. Sahoo, V. E. Kuncser, J. Eisenmenger, I. Felner, J. Nogués, Kai Liu,W. Keune, and I. K. Schuller, “Changes in ferromagnet spin structure induced by exchange bias in Fe/MnF2 films”, Physical Review B, 70, 224414 (2004).                            
  151. S. Cho, S. M. Kauzlarich, J. Olamit, Kai Liu, F. Grandjean, L. Rebbouh, and G. J. Long, “Characterization and magnetic properties of core/shell structured Fe/Au nanoparticles”, Journal of Applied Physics, 95, 6804-6806 (2004).
  152. L. M. Zhao, P. Klavins, and Kai Liu, “Synthesis and properties of hole-doped Li1-xBC”, Journal of Applied Physics, 93, 8653-8655 (2003).      
  153. H. G. Katzgraber, F. Pázmándi, C. R. Pike, Kai Liu, R. T. Scalettar, K. L. Verosub, and G. T. Zimányi, “Reversal-field memory in magnetic hysteresis”, Journal of Applied Physics, 93, 6617-6619 (2003).          
  154. Kai Liu, L. M. Zhao, P. Klavins, F. E. Osterloh and H. Hiramatsu, “Extrinsic magnetoresistance in magnetite nanoparticles”, Journal of Applied Physics, 93, 7951-7953 (2003).                   
  155. J. I. Martín, J. Nogués, Kai Liu, J. L. Vicent, and I. K. Schuller, “Ordered magnetic nanostructures: fabrication and properties”, topical review, Journal of Magnetism and Magnetic Materials, 256, 449-501 (2003).
  156. Kai Liu, J. Nogués, C. Leighton, H. Masuda, K. Nishio, I. V. Roshchin and I. K. Schuller, “Fabrication and thermal stability of arrays of Fe nanodots”, Applied Physics Letters, 81, 4434-4436 (2002).            
  157. H. G. Katzgraber, F. Pázmándi, C. R. Pike, Kai Liu, R. T. Scalettar, K. L. Verosub, and G. T. Zimányi, “Reversal-field memory in the hysteresis of spin-glasses”, Physical Review Letters, 89, 257202 (2002).
  158. M.I. Montero, Kai Liu, O.M. Stoll, A. Hoffmann, I. K. Schuller, J. J. Åkerman, J.I. Martin, J.L. Vicent, S.M. Baker, T.P. Russell, C. Leighton and J. Nogués, “Nanostructures and the Proximity Effect”, Journal of Physics D: Applied Physics 35, 2398-2402 (2002).
  159. M. S. Lund, W. A. A. Macedo, Kai Liu, J. Nogués, I. K. Schuller and C. Leighton, “Effect of antiferromagnet anisotropy on the critical thickness in exchange biased bilayers”, Physical Review B 66, 054422 (2002).
  160. M. R. Fitzsimmons, C. Leighton, J. Nogués, A. Hoffmann, Kai Liu, I. K. Schuller, C. F. Majkrzak, J. A. Dura, J. R. Groves, R. W. Springer, P. N. Arendt, V. Leiner, and H. Lauter, “Influence of antiferromagnetic crystallinity on perpendicular exchange coupling and exchange bias”, Physical Review B 65, 134436 (2002).              
  161. M. R. Fitzsimmons, C. Leighton, A. Hoffmann, P. C. Yashar, J. Nogués, Kai Liu, C. F. Majkrzak, J. A. Dura, H. Fritzsche, I. K. Schuller, “Influence of interfacial disorder and temperature on mag-netization reversal in exchange-coupled bilayers”, Physical Review B 64, 104415 (2001).
  162. Kai Liu, S. M. Baker, M. Tuominen, T. P. Russell, I. K. Schuller “Tailoring exchange bias with magnetic nanostructures”, Physical Review B 63, (Rapid Communications), 060403 (2001).
  163. S. M. Zhou, Kai Liu, C. L. Chien, “Dependence of exchange coupling in permalloy/Cr82Al18 bilayers on the constituent layer thickness”, Journal of Applied Physics, 87, 6659-6661 (2000).                  
  164. C. L. Chien, F. Y. Yang, Kai Liu, D. H. Reich, and P. C. Searson, “Very large magnetoresistance in electrodeposited single-crystal Bi thin films”, invited, Journal of Applied Physics, 87, 4659-4664 (2000).
  165. Kai Liu, S. M. Zhou, C. L. Chien, V. Nikitenko, V. Gornakov, A. Shapiro, R. Shull,  “Anisotropy-dependent macroscopic domain structure in wedged-Permalloy/Uniform-FeMn bilayers”, Journal of Applied Physics, 87, 5052-5054 (2000).
  166. F. Y. Yang, Kai Liu, Kimin Hong, D. H. Reich, P. C. Searson, and C. L. Chien, “Shubnikov-de Haas oscillations in electrodeposited single-crystal bismuth thin films”, Physical Review B, 61, 6631-6636 (2000).     
  167. V. Nikitenko, V. Gornakov, A. Shapiro, R. Shull, Kai Liu, S. M. Zhou and C. L. Chien, “Asymmetry in elementary events of magnetization reversal in a ferro-magnetic/antiferromagnetic bilayer”, Physical Review Letters 84, 765 (2000).   
  168. F. Y. Yang, Kai Liu, Kimin Hong, D. H. Reich, P. C. Searson, C. L. Chien, “Large magnetoresistance of electrodeposited single-crystal bismuth thin films”, Science 284, 1335-1337 (1999).
  169. H. S. Wang, Qi Li, Kai Liu, C. L. Chien, “Low-field magnetoresistance anisotropy in ultrathin Pr0.67Sr0.33MnO3 films grown on different substrates”,  Applied Physics Letters 74, 2212 (1999).
  170. F. Y. Yang, Kai Liu, C. L. Chien, P. C. Searson, “Large magnetoresistance and finite-size effects in electrodeposited single-crystal Bi thin films”, Physical Review Letters 82, 3328 (1999).   
  171. Z. Yu, Kai Liu, Z. J. Zhong, J. Q. Tao, and X. Z. You, “Rapid cooling and magnetic field induced cooperative effect for the metastable quintet state in a spin crossover complex”, Applied Physics Letters, 74, 4029-4031 (1999).
  172. C. M. Liu, Z. Yu, R. G. Xiong, Kai Liu, and X. Z. You, “Crystal structure and novel magnetic of three-dimensional manganese (11)-µ-1, 3-Azido system”, Inorganic Chemistry Communications 2, 31-34 (1999).
  173. K. M. Hong, F. Y. Yang, Kai Liu, D. H. Reich, C. L. Chien, P. C. Searson, F. F. Balakirev, and G. S. Boebinger, “Giant positive magnetoresistance of Bi nanowire arrays in high magnetic fields”, Journal of Applied Physics 85, 6184-6186 (1999).
  174. J. W. Cai, Kai Liu, and C. L. Chien, “Exchange coupling in the paramagnetic state”, Physical Review B, 60, 72-75 (1999).        
  175. T. Ambrose, Kai Liu, and C. L. Chien, “Doubly exchange-biased NiCoO/NiFe/ Cu/NiFe/NiCoO spin valves”, Journal of Applied Physics 85, 6124 (1999).     
  176. Kai Liu, C. L. Chien, and P. C. Searson, “Finite size effect in Bi nanowires”, Physical Review B 58, (Rapid Communications) 14681- 14684 (1998).         
  177. S. M. Zhou, Kai Liu, and C. L. Chien, “Exchange coupling and macroscopic domain structure in a wedged permalloy/FeMn bilayer”, Physical Review B 58, (Rapid Communications) 14717-14720 (1998).
  178. Kai Liu, C. L. Chien, P. C. Searson, Kui Yu-Zhang, “Structural and magneto-transport properties of electrodeposited bismuth nanowires”, Applied Physics Letters, 73, 1436-1438 (1998).      
  179. Kai Liu and C. L. Chien, “Magnetic and magneto-transport properties of novel nanostructured networks”, IEEE Transactions on Magnetics, 34, 1021 (1998).  
  180. Kai Liu, C. L. Chien, P. C. Searson, Kui Yu-Zhang, “Giant positive magnetoresistance in arrays of semi-metallic bismuth nanowires”, IEEE Transactions on Magnetics, 34, 1093 (1998).    
  181. K. Liu, X. W. Wu, K. H. Ahn, C. L. Chien, and J. Q. Xiao, “Origin of colossal magnetoresistance in Nd1-xCaxMnO3”, Journal of Chinese Electron Microscopy Society 16 (4), 425 (1997).
  182. K. H. Ahn, X. W. Wu, K. Liu, and C. L. Chien, “Effects of Fe doping in the colossal magnetoresistive La1-xCaxMnO3”, Journal of Applied Physics 81, 5505 (1997). 
  183. K. H. Ahn, X. W. Wu, K. Liu, and C. L. Chien, “Magnetic properties and colossal magnetoresistance of La(Ca)MnO3 materials doped with Fe”, Physical Review B 54, 15299-15302 (1996).
  184. K. Liu, X. W. Wu, K. H. Ahn, T. Sulchek, C. L. Chien, and John Q. Xiao, “Charge ordering and magnetoresistance in Nd1-xCaxMnO3 due to reduced double exchange”, Physical Review B 54, 3007-3010 (1996).
  185. K. Liu, K. Nagodawithana, P. C. Searson, and C. L. Chien, “Perpendicular giant magnetoresistance of multilayered Co/Cu nanowires”, Physical Review B 51, (Rapid Communications) 7381-7384 (1995)
  186. J. Q. Xiao, K. Liu, C. L. Chien, L. F. Schelp, and J. E. Schmidt, “Effects of Ar-ion implantation and annealing on structural and magnetic properties of Co/Pd multilayers”, Journal of Applied Physics 76, 6081-6083 (1994).

Proceedings and Other Publications

  1. G. Chen, C. Ophus, P. D. Murray, C. J. Jensen, A. Quintana, M. Robertson, E. C. Burks, D. A. Gilbert, J. Malloy, D. Bhattacharya, Z. J. Chen, G. Yin, A. K. Schmid, and Kai Liu, “Magneto-Ionic Control of Spin Textures and Interfaces”, invited, 2022 IEEE 33rd Magnetic Recording Conference (TMRC), pp. 1-2, doi: 10.1109/TMRC56419.2022.9918544 (2022).
  2. J. Malloy, A. Quintana, C. J. Jensen, and Kai Liu, “Nanoporous Metal Foams as Efficient & Reusable Submicron Filtration Media”, Advanced Materials & Processes, 179, 28-31 (2021).
  3. Kai Liu, “Preface: Proceedings of the 61st Annual Conference on Magnetism and Magnetic Materials, October 31–November 4, 2016, New Orleans, LA, USA”, AIP Advances, 7, 055501 (2017).
  4. D. A. Gilbert, A. J. Grutter, E. Arenholz, K. Liu, B. J. Kirby, J. A. Borchers, and B. B. Maranville, “Beyond the interface limit: structural and magnetic depth profiles of voltage-controlled magneto-ionic heterostructures”, NIST Center for Neutron Research 2016 Accomplishments and Opportunities, 24-25 (2016).
  5. D. A. Gilbert, B. B. Maranville, A. L. Balk, B. J. Kirby, P. Fischer, D. T. Pierce, J. Unguris, J. A. Borchers, and Kai Liu, “Realization of ground-state artificial skyrmion lattices at room temperature”, NIST Center for Neutron Research 2016 Accomplishments and Opportunities, 20-21 (2016).
  6. D. A. Gilbert, J. W. Liao, L. W. Wang, J. W. Lau, T. J. Klemmer,J. U. Thiele, C. H. Lai, and Kai Liu, “Magnetometry-based order parameter to probe the A1 to L10 transformation in FeCuPt for heat-assisted magnetic recording media”, invited, Proceedings of the INTERMAG 2015, IEEE International Magnetics Conference Digest, AA-06, DOI: 10.1109/INTMAG.2015.7156496 (2015).
  7. D. A. Gilbert, G. T. Zimanyi, R. K. Dumas, M. Winklhofer, A. Gomez, N Eibagi, J. L. Vicent, and Kai Liu, “Distinguishing Nearest Neighbor and Mean Field Interactions in Nanomagnet Arrays Using the FORC Technique“, Proceedings of the INTERMAG 2014, IEEE International Magnetics Conference Digest, FH-05 (2014).
  8. J.W. Liao, U. Atxitia, D. Gilbert, R. Evans, B. Kirby, Kai Liu, R. Chantrell, C. H. Lai, “Magnetization reversal modes in L10 FePt based exchange spring magnets with magnetically soft layers of varied Curie temperature”, Proceedings of the INTERMAG 2014, IEEE International Magnetics Conference Digest, ES-08 (2014).
  9. Da-Wei Shi, P. Greene, P. Liu, K. Javed, Kai Liu, and Xiu-Feng Han, “Magnetic multilayers on self-organized hexagonal patterned nanodots”, Proceedings of the INTERMAG 2014, IEEE International Magnetics Conference Digest, BW-17 (2014).
  10. D. A Gilbert, J. W. Liao, L. W. Wang, T. J. Klemmer, J. U. Thiele, C. H. Lai, and Kai Liu, “Probing the A1 to L10 Transformation in FeCuPt Using the First Order Reversal Curve Method”, Proceedings of the INTERMAG 2014, IEEE International Magnetics Conference Digest, BB-11 (2014).
  11. A. M. Thron, P. Greene, Kai Liu, and Klaus van Benthem, “In-situ Heating Investigations of Dewetting Transitions in Ultra-Thin Ni Films on SiO2 Layers”, Microscopy and Microanalysis, 19, Supplement S2 (Proceedings of Microscopy & Microanalysis 2013), 450-451 (2013).
  12. J. S. McCloy, W. Jiang,J. Sundararajan, Y. Qiang, E. Burks, and Kai Liu, “Structure and magnetic properties of irradiated Fe-Fe oxide core-shell nanoclusters”, AIP Conference Proceedings, 1525, 659-662 (2013).
  13. A. M. Thron, P. Greene, Kai Liu, and Klaus van Benthem, “Wetting-Dewetting Transitions of Ultrathin Nickel Films Deposited on Silicon (100) Substrates”, Microscopy and Microanalysis, 17, Supplement S2 (Proceedings of Microscopy & Microanalysis 2011), 1328-1329 (2011).
  14. B. J. Kirby, J. E. Davies, P. Greene, Kai Liu, S. M. Watson, G. T. Zimanyi, R. D. Shull, P. A. Kienzle, and J. A. Borchers, “Directly Probing Anisotropy Gradients Using Polarized Neutron Reflectometry”, NIST Center for Neutron Research 2011 Accomplishments and Opportunities, 49 (2011).
  15. J. Liao, H. Hou, R. K. Dumas, R. Chen, Kai Liu, and C. Lai, “Reduced intrinsic switching field distribution of CoPtCr-SiO2 recording media grown on MnRu intermediate layers”, 2011 IEEE International Magnetics Conference Digest, FW-05 (2011).
  16. D. A. Gilbert and Kai Liu, “Probing magnetic configurations and interactions in embedded multilayered Co/Pd nanowires”, 2011 IEEE International Magnetics Conference Digest, FB-03 (2011).
  17. B. F. Valcu, D. A. Gilbert, and Kai Liu, “Fingerprinting Inhomogeneities in Magnetic Recording Media using the First Order Reversal Curve Method”, 2011 IEEE International Magnetics Conference Digest, CE-08 (2011).
  18. P. K. Greene, B.J. Kirby, J.A. Borchers, J.W. Lau and Kai Liu, “Deposition order dependent magnetization reversal of pressure graded Co/Pd films”, 2011 IEEE International Magnetics Conference Digest, AB-03 (2011).
  19. A. M. Thron, P. Greene, Kai Liu, and Klaus van Benthem, “Atomic Level Mechanisms of Solid-State Dewetting in Thin Metal Films Deposited on Silicon (100) Substrates”, Microscopy and Microanalysis, 16, Supplement S2 (Proceedings of Microscopy & Microanalysis 2010), 1462-1463 (2010).
  20. I.V. Roshchin, C. Li, H. Suhl, X. Batlle, S. Roy, S. Sinha, S. Park, R. Pynn, M.R. Fitzsimmons, J. Mejia-Lopez, D. Altbir, A. Romero, R. Dumas, Kai Liu, and I. K. Schuller, “Magnetic Vortices in Sub-100 nm Magnets”, invited, Proc. of International Conference on Electromagnetics in Advanced Applications, 2009 – ICEAA ’09, 1028 – 1029 (2009).
  21. C. Y. Fong, M. Shaughnessy, R. Snow, Kai Liu, J. E. Pask and L. H. Yang, “Physical origin of measured magnetic moment in MnxSi1-x with x = 0.1%”, invited, Proceedings of SPIE, 7398, 73980J-1-13 (2009).
  22. R. K. Dumas, P. Greene and Kai Liu, “First order reversal curve analysis of magnetization and magnetoresistance of Co/Cu multilayer thin films”, 2009 IEEE International Magnetics Conference Digest, GF-07, (2009).
  23. R.K. Dumas, J.Wong, P. Greene and Kai Liu, “Probing magnetic configurations in Co/Cu multilayered nanowires”, 2009 IEEE International Magnetics Conference Digest, EE-02, (2009).
  24. Z. Liu, R. Brandt, R. K. Dumas, C. Li, I. K. Schuller, Kai Liu, and H. Schmidt, “Static and dynamic properties of sub-100 nm Fe nanodot arrays”, 2009 IEEE International Magnetics Conference Digest, DQ-01, (2009).
  25. J. Persson, S. Bonetti, M. Gothelid, O. Tjernberg, J. Akerman, R.K. Dumas, Kai Liu, O. Karis, M.Wikberg and P. Svedlindh, “Magnetic interactions and effects of N-codoping in Mn doped ZnO”, 2009 IEEE International Magnetics Conference Digest, AF-08, (2009).
  26. Jared Wong, Peter Greene, Randy K. Dumas, Kai Liu, “Single Domain to Vortex State Transition in Multilayered Cobalt/Copper Nanowires”, invited, Proceedings of SPIE, 7036, 703610-1-10 (2008).
  27. Chunsheng Du, J. Yun, R. K. Dumas, X. Yuan, Kai Liu, N. D. Browning and Ning Pan, “Synthesis of three-dimensional Mn3O4 Nanowires”, NSTI Nanotech 2007, Technical Proceedings 1, 414-417 (2007).
  28. M. Asta, S. M. Kauzlarich, Kai Liu, A. Navrotsky, and F. E. Osterloh, “Inorganic Nanoparticles – Unique Properties and Novel Applications”, Material Matters, 2 (1), 3-6 (2007).
  29. D. Dosev, M. Nichkova, R. K. Dumas, Kai Liu, I. M. Kennedy, “Spray pyrolysis synthesis of particles possessing magnetic and luminescent properties. Application of magnetic/luminescent particles in immunoassays”, in BioMEMS and Nanotechnology II, Dan V. Nicolau, Editor, Proceedings of SPIE, 6036, 60360T-1-10 (2006).
  30. J. E. Davies, Kai Liu, E. E. Fullerton, J. S. Jiang, S. D. Bader, “Effect of hard layer demagnetization on the magnetization reversal of epitaxial Fe/SmCo spring magnets”, 2006 IEEE International Magnetics Conference Digest, p. 820, (2006).
  31. Kai Liu, J. E. Davies, R. K. Dumas, G. T. Zimanyi, O. Hellwig, E. E. Fullerton, J. S. Jiang, S. D. Bader, G. Denbeaux, J. B. Kortright, I. V. Roshchin, C. P. Li, I. K. Schuller, “First-Order Reversal Curve Studies of Magnetization Reversal in Prototype Recording Media”, Invited, 2006 IEEE International Magnetics Conference Digest, p. 719, (2006).
  32. E. Arenholz, K. Liu, Z. P. Li, I. K. Schuller, “Magnetization reversal in the ferromagnetic layer, the antiferromagnetic layer and near the interface of exchange biased FeF2 and MnF2 systems”, 2006 IEEE International Magnetics Conference Digest, p. 408, (2006).
  33. I. V. Roshchin, C. Li, Z. P. Li, J. Mejia-Lopez, D. Altbir, A. H. Romero, R. K. Dumas, Kai Liu, X. Batlle, I. K. Schuller, “Effect of Anisotropy and Exchange Bias on Reversal of Sub-100 nm Magnetic Dots”, 2006 IEEE International Magnetics Conference Digest, p. 404, (2006).
  34. Kai Liu, Sung-Jin Cho, S. M. Kauzlarich, J. C. Idrobo, J. E. Davies, J. Olamit, N. D. Browning, A. M. Shahin, G. J. Long, and F. Grandjean, “Fe-Core/Au-Shell Nanoparticles: Growth Mechanisms, Oxidation and Aging Effects”, invited, in Degradation Processes in Nanostructured Materials, edited by M. Chipara, O. Puglisi, R. Skomski, and B. S. Hsiao, (Materials Research Society Symposium Proceedings, 887, Warrendale, PA, 2006) 0887-Q07-04.
  35. D. Dosev, M. Nichkova, R. K. Dumas, Kai Liu, I. M. Kennedy, “Spray pyrolysis synthesis of particles possessing magnetic and fluorescent properties. Application of magnetic/fluorescent particles in immunoassays”, AIChE Annual Meeting, Conference Proceedings, p. 11352-11364 (2005).
  36. Kai Liu, J. E. Davies, O. Hellwig, E. E. Fullerton, G. Denbeaux, J. B. Kortright, H. G. Katzgraber, C. R. Pike, R. T. Scalettar, K. L. Verosub, G. T. Zimanyi, and I. K. Schuller, “Fingerprinting magnetic hysteresis”, invited, Proceedings of the 11th Annual International Conference on Composites/Nano Engineering (ICCE-11), p445 (2004).
  37. Kai Liu, L. Zhao, P. Klavins, F. E. Osterloh, J. Nogues, C. Leighton, H. Masuda, K. Nishio, I. V. Roshchin, and I. K. Schuller, “Synthesis and Thermal stability of nanomagnets”, invited, Proceedings of the 10thAnnual International Conference on Composites/Nano Engineering (ICCE-10), p.429-430 (2003).
  38. Kai Liu, J. Nogues, C. Leighton, I. K. Schuller, S. M. Baker, M. Tuominen, T. P. Russell, H. Masuda, and K. Nishio, “Exchange biased magnetic nanostructures”, invited, Proceedings of the 2002 Symposium for Chinese Scholars on Magnetoelectronics and Superconducting Electrical Engineering, p.64-75 (2002). 
  39. K.Nagodawithana, K. Liu, P. C. Searson, and C. L. Chien, “Processing and properties of electrodeposited Co/Cu multilayered nanowires”, Proceedings of the Symposium on Nanostructured Materials in Electrochemistry, Electrochemical Society Proceedings Vol. 95-8, edited by P. C. Searson and G. J. Meyer, p.237-243 (1995).

Updated 11/2022

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