室温交换偏置效应的研究进展

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Abstract The exchange bias effect refers to the phenomenon that the hysteresis loop of the material is shifted along the magnetic field axis after the material is cooled with or without the extra magnetic field. It has become an important theoretical basis for research on information storage technology, and plays an indispensable role in electronic devices such as electromagnetic sensors, magnetic read heads, and magnetic spin valves. Therefore, in recent years, researchers have attracted great attention and research. The exchange bias effect is widely present in nano-core@shell particles, multilayer film systems and bulk alloys.However, most of the exchange bias systems should be investigated at low temperature(T≤50 K),which limits the application of exchange bias effect. After years of exploration and research, the room temperature exchange bias effect has been obtained in some thin film systems, nano-core@shell particles, multilayer film systems and nearly-compensated ferrimagnetic systems. In this paper,the investigation of room temperature exchange bias effect in recent years is summarized in detail,and the existing problems and challenges are analyzed in the hope of providing references for the study of exchange bias systems at room temperature.

Key words： exchange bias effect room temperature magnetic films core-shell structure nearly- compensated ferrimagnetic systems

Published: 16 July 2021

CLC number:

O482.51

Fund:National Natural Science Foundation of China (51801145), China Postdoctoral Science Foundation (2018M643630).

About author:: Jiale Guo, received her B.S. Degree in materials phy-sics from Xi'an Jiaotong University in 2020. She is currently pursuing her MA.Sc at School of Physics, Xi'an Jiaotong University. Her research has focused on nano-films.Fanghua Tian, received his Ph.D. degree in materials science and engineering from School of Science, Xi'an Jiaotong University. Now he is an assistant professor in Xi'an Jiaotong University. Mainly engaged in the research of new energy materials, martensitic transformation and physical properties of magnetic materials and has a solid theoretical foundation and rich experimental experience in the synthesis and analysis of materials by physical and chemical means. Presided over the Natio-nal Natural Science Foundation of China Youth Fund, participated in a number of research work of the National Natural Science Foundation, and has published more than 20 articles in famous international academic journals such as Advance Science, Applied Physics Letters, Scientific Reports, Compo-sites Science and Technology, Electrochimica Acta, etc., and have been cited More than 300 times.Sen Yang, received his Ph.D. degree in Xi'an Jiaotong University and now is a professor and doctoral supervisor of School of Physics, Xi'an Jiaotong University. In 2010, he was supported by Program for New Century Excellent Talents in University. In 2012, he was funded by the First National Outstanding Youth Science Fund. In 2014, he was awarded the Shaanxi Provincial Youth Science and Technology Award. In 2015, he was selec-ted as the “Young Top Talent” of Xi'an Jiaotong University. His research interests are focused on the magnetic alloys and films, nano-magnetic materials. He has successively published more than 160 articles in well-known international journals such as Nature Materials, Nature Nanotechnology, Physics Review Letters, Journal of the American Chemical Society, and has been cited more than 1 700 times.

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	GUO Jiale
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	YANG Sen

Cite this article:

GUO Jiale,ZHAO Qizhong,TIAN Fanghua, et al. Research Progress of Exchange Bias Effect at Room Temperature[J]. Materials Reports, 2021, 35(Z1): 297-301.

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http://www.mater-rep.com/EN/ OR http://www.mater-rep.com/EN/Y2021/V35/IZ1/297

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