Details of the Faculty or Staff----Institute of Metal Research

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LIU Wei
Title:Professor	Email: wliu@imr.ac.cn
Tel. : +86-24-83978856	FAX: +86-24-23891320
Division: Shenyang National Laboratory for Materials Science
Address: Institute of Metal Research Chinese Academy of Sciences (IMR CAS), 72 Wenhua Road,Shenyang,China, 110016

Experience：

Education：

Ph.D. in Materials Physics and Chemistry : Institute of Metal Research, Chinese Academy of Sciences, Shenyang, P.R. China,
Dates of study :September 1998-June 2000

M.S. in Material Science: Institute of Metal Research, Chinese Academy of Sciences, P.R. China
Dates of study :September 1990-May 1993

B.S. in Physics: Jilin University, Changchun, P.R. China,
Dates of study : September 1983-July 1987

Work experience：

May 2001-present
Professor in Institute of Metal Research, Chinese Academy of Sciences, major in magnetism and magnetic materials

August 2009-Nov.2009, April 2004-November 2004, July 2000–December 2000, Feb. 2001-August 2001
Visiting scholar in Center for Materials Research and analysis, University of Nebraska-Lincoln

April 1998-May 2001
Associate Professor in Institute of Metal Research, Chinese Academy of Sciences

Jan. 1996–July 1996
Visiting scholar in Van der Waals - Zeeman Institute, University of Amsterdam.

September 1994- April 1998
Assistant Professor in Institute of Metal Research, Chinese Academy of Sciences

July 1987-September 1994
Research Assistant in Institute of Metal Research, Chinese Academy of Sciences

Research Interest：

1）Structures and magnetic properties of Nanostructured permanent magnets, including metastable phase permanent magnets, nanocomposite permanent magnet films, magnetic recording films with out of plane anisotropy.

2）Exchange coupling, magnetoelectric coupling, magnetic and electric transport properties in magnetic and ferroelectric multilayers

3）High frequency electromagnetic properties of Magnetic/dielectric nano materials.

Research Achievement：

Service to the International Professional Societies：

Honors：

Publication：

　　1. Yuhang Song, Zhiming Dai, Long Liu, Jinxiang Wu, Tingting Li, Xiaotian Zhao,* Wei Liu,* and Zhidong Zhang, I Field-Free Spin-Orbit Torque Switching of Perpendicular Magnetization by Making Full Use of Spin Hall Effect, Adv. Electron. Mater. 9(2023) 2200987.

　　2. Long Liu, Yuhang Song, Xiaotian Zhao,* Wei Liu,* and Zhidong Zhang, Full-Scale Field-Free Spin-Orbit Torque Switching in HoCo Structure with a Vertical Composition Gradient, Adv. Funct. Mater., 32(2022) 2200328.

　　3. Z.X. Ye, X.T. Zhao, W. Liu*, L. Liu, J. X. Wu, Y. Li, J. Ma, H. Z. Ju, Y. H. Song, Z.D. Zhang, Transformation of coercivity mechanism and evolution of microstructure in high performance Nd-Dy-Fe-Co-B thick films, J. Alloys and Compounds 923 (2022) 166477.

　　4. H. Z. Ju, X. T. Zhao, W. Liu*, Y. H. Song, L. Liu, J. Ma, Y. Li, J. X. Wu and Z. D. Zhang, Enhanced spin-orbit torque and low critical current density in Pt100-xRux/[CoNi]/Ru multilayer for spintronic devices, ACS Appl. Mater. & Inter., 13(2021) 61742.

　　5. F. Wang, X. P. Wang, Y. F. Zhao, D. Xiao, L. J. Zhou, W. Liu, Z. D. Zhang, W. W. Zhao, M. H. W. Chan, N. Samarth, C. X. Liu, H. J. Zhang*, and C. Z. Chang*, Interface-induced sign reversal of the anomalous Hall effect in magnetic topological insulator heterostructures, Nature Commun. 12(2021)79.

　　6. L. Liu, X. T. Zhao, W. Liu*, Y. H. Song, X. G. Zhao and Z. D. Zhang, Influence of rare earth metal Ho on interfacial Dzyaloshinskii-Moriya interaction and spin torque efficiency in Pt/Co/Ho multilayers, Nanoscale, 12(2020) 12444.

　　7. X. T. Zhao, L. Z. Ji, W. Liu*, S. K. Li, L. Liu, Y. H. Song, Y. Li, J. Ma, X. D. Sun, H. W. Wang, X. G. Zhao and Z. D. Zhang, Field-free switching of a spin-orbit-torque device through interlayer-coupling induced domain walls, Phys. Rev. Appl., 13(2020) 044074.

　　8. Y. H. Song, X. T. Zhao, W. Liu*, L. Liu, S.K. Li and Z. D. Zhang, Spin-orbit torque driven four-state switching in splicing structure, Appl. Phys. Lett., 117(2020) 232408.

　　9. S. K. Li, X. T. Zhao, W. Liu*, Y. H. Song, L. Liu, X. G. Zhao, Z. D. Zhang, Interface effect of ultrathin W layer on spin- orbit torque in Ta/W/CoFeB multilayers, Appl. Phys. Lett. 114(2019) 082402.

　　10. S. K. Li, X. T. Zhao, W. Liu*, X. G. Zhao, Z. D. Zhang, Modulation of spin-orbit torque induced magnetization switching in Pt/CoFe through oxide interlayers, Appl. Phys. Lett. 114(2019) 212404.

　　11. F. Wang, D. Xiao, W. Yuan, J. Jiang, Y.-F. Zhao, L. Zhang, W. Liu, Z.D. Zhang, C. X. Liu, J. Shi, W. Han, M. H. W. Chan, N. Samarth, and C.Z. Chang*, Observation of Interfacial Antiferromagnetic Coupling between Magnetic Topological Insulator and Antiferromagnetic Insulator, Nano Lett. 19(2019) 2945-2952.

　　12. Y. D. Gu, K. Xu, C. Song*, X.Y. Zhong, H. R. Zhang, H. J. Mao, M. S. Saleem, J. R. Sun, W. Liu*, Z. D. Zhang, F. Pan, J. Zhu, Oxygen-Valve Formed in Cobaltite-Based Heterostructures by Ionic Liquid and Ferroelectric Dual-Gating, ACS Applied Materials & Interfaces, 11(2019) 19584-19595.

　　13. F. Wang, H.R. Zhang, J. Jiang, Y.F. Zhao, J. Yu, W. Liu*, D. Li, M.H. W. Chan, J.R Sun, Z.D. Zhang, and C.Z. Chang*, Chromium-induced ferromagnetism with perpendicular anisotropy in topological crystalline insulator SnTe(111) ultra-thin films, Phys. Rev. B 97 (2018) 115414.

　　14. X.T. Zhao, W. Liu*, S.K. Li, T.T. Wang, L, Liu, Y.H. Song, S. Ma, X.G. Zhao and Z.D. Zhang, Asymmetric current-driven switching of synthetic antiferromagnets with Pt insert layers, Nanoscale 10 (2018) 7612.

　　15. Z. M. Dai, Y. Y. Dai, W. Liu*, T. T. Wang, X. T. Zhao, X. G. Zhao and Z. D. Zhang, Magnetization reversal of vortex states driven by out-of-plane field in the nanocomposite Co/Pd/Ru/Py disks, Appl. Phys. Lett., 111(2017)022404.

　　12. Z. M. Dai, W. Liu*, X. T. Zhao, T. T. Wang, S. K. Li, Y. S. Yu*, X. G. Zhao and Z. D. Zhang，Magnetization reversal and magnetic interactions in anisotropic Nd-Dy-Fe-Co-B/MgO/α-Fe disks and multilayers, Nanoscale, 8(2017)7385.

　　13. F. Wang, Y. Q. Zhang, Y. Bai, W. Liu*, H. R. Zhang, W. Y. Wang, S. K. Li, S. Ma, X. G. Zhao, J. R. Sun, Z. H. Wang, Z. J. Wang and Z.D. Zhang, Oxygen vacancy formation, crystal structures and magnetic properties of three SrMnO3？δ films, Appl. Phys. Lett., 109(2016)052403.

　　14. W. Liu*, X.H. Liu, W.B. Cui，W.J. Gong, Z.D. Zhang*，Exchange couplings in magnetic films，Chin. Phys. B，22 (2013) 027104 (TOPICAL REVIEW).

　　15. W. J. Gong, W. J. Yu, W. Liu*, S. Guo, S. Ma, J. N. Feng, B. Li, and Z. D. Zhang, Exchange bias and its thermal stability in ferromagnetic/antiferromagnetic antidot arrays, Appl. Phys. Lett., 101(2012) 012407.

　　16. X. H. Liu, W. Liu*, S. Guo, F. Yang, X. K. Lv, W. J. Gong, Z. D. Zhang, Effects of anisotropy and spin-asymmetry of ferromagnetic materials in ferromagnetic / Cr2O3 / ferromagnetic trilayers, Appl. Phys. Lett., 96 (2010) 082501.

　　17. W.B. Cui, W. Liu*, Z.D. Zhang, The origin of large overestimation of the magnetic entropy changes calculated directly by Maxwell relation, Appl. Phys. Lett., 96 (2010) 222509.

　　18. X. H. Liu, W. Liu*, S. Guo, W. J. Gong, J. N. Feng, Z. D. Zhang, Strong effects of magnetic anisotropy on exchange coupling and magnetotransport properties in ferromagnetic/NiO/ferromagnetic trilayers, Appl. Phys. Lett., 97 (2010) 072502.

　　19. X. H. Liu, W. Liu*, F. Yang, X. K. Lv, W. B. Cui, S. Guo, W. J. Gong, Z. D. Zhang, Temperature dependence of competition between interfacial and interlayer exchange couplings in ferromagnetic/antiferromagnetic /ferromagnetic trilayer, Appl. Phys. Lett., 95 (2009) 222505.

　　20. X. H. Liu, W. Liu*, W. J. Hu, S. Guo, X. K. Lv, W. B. Cui, X. G. Zhao, Z.D. Zhang, Giant magnetocaloric effect in cobalt hydroxide nanoparticles, Appl. Phys. Lett., 93 (2008) 202502.

　　21. W. B. Cui, S. J. Zheng, W. Liu*, X. L. Ma, Y. Fang, Q. Yao, X. G. Zhao and Z. D. Zhang, Anisotropic behavior of exchange coupling in textured Nd2Fe14B/α-Fe multilayer films, J. Appl. Phys., 104 (2008) 053903.

　　22. S. L. Chen, W. Liu and Z. D. Zhang, Coercivity mechanism of Pr2Fe14B thin films with perpendicular anisotropic texture, Phys. Rev. B 72 (2005) 224419.