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摘要

电场调控磁性能够有效降低功耗，在未来低功耗多功能器件等方面具有巨大的潜在应用前景.铁磁/铁电多铁异质结构是实现电场调控磁性的有效途径，其中室温、磁电耦合效应大的应变媒介磁电耦合是最为活跃的研究领域之一.本文简要介绍在以Pb（Mg1/3Nb2/3）0.7Ti0.3O3为铁电材料的多铁异质结构中通过应变媒介磁电耦合效应对磁性、磁化翻转及磁性隧道结调控的研究进展.首先讨论了多铁异质结构中电场对磁性的调控；之后介绍了电场调控磁化翻转的研究进展及理论上实现的途径；然后简述了电场对磁性隧道结调控的相关结果；最后在此基础上，对多铁异质结构中电场调控磁性及磁性器件进行了总结和展望.

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Abstract

Electric-field control of magnetism has recently received much attention because of low-power consumption, which has potential applications in low-power multifunction devices. Ferromagnetic/ferroelectric multiferroic heterostructure is a useful way to realize the electric-field control of magnetism. Strain-mediated magnetoelectric coupling with large magnetoelectric coupling coefficient at room temperature is one of the current research hotspot. In this paper, we give an overview of recent progress of strain-mediated magnetoelectric coupling in multiferroic heterostructures.This review paper consists of five parts:introduction of multiferroics, electric-field control of magnetism in multiferroic heterostructures, electrical control of magnetization reversal, electric-field control of magnetic tunnel junctions, and the future prospects of multiferroic heterostructures. The basic concepts of multiferroics and background of magnetoelectric coupling effect are introduced in the first part.In the second part, a brief review of the recent work on the Pb(Mg1/3Nb2/3)0.7Ti0.3O3 (PMN-PT) based multiferroic heterostructures is given. The PMN-PT has a FE domain structure, which plays a vital role in electric-field control of magnetism, especially the 109 domain switching. For PMN-PT (001), the importance of 109 domain switching on the nonvolatile electrical control of magnetism is discussed. For PMN-PT (011), it is shown how to obtain nonvolatile strain which induces magnetic easy axis to be rotated by 90. The work on electric-field modulation of ferromagnetic material with perpendicular magnetic anisotropy is also mentioned.Electric-field control of magnetization reversal is still a challenge and remains elusive. Combination of strain-mediated magnetoelectric coupling and exchanging bias is a promising method to reverse magnetization by electric field, and the exchange-biased system/ferroelectric structures are given in the third part. There are also some theoretical attempts and proposals to realize the electrical control of 180 magnetization reversal. Then the method to manipulate magnetic tunnel junctions by electric field is given through integrating multiferroics and spintronics. Further outlook of the multiferroic heterostructures is also presented finally.

Keywords:

multiferroic heterostructures/
converse magnetoelectric coupling effect/
electric-field controlled magnetism/
magnetization reversal

作者及机构信息

陈爱天^1,2,
赵永刚^1,3

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通信作者:陈爱天,aitian.chen@kaust.edu.sa;ygzhao@tsinghua.edu.cn; 赵永刚,aitian.chen@kaust.edu.sa;ygzhao@tsinghua.edu.cn

基金项目:国家重点基础研究发展计划（批准号：2015CB921402）和国家自然科学基金（批准号：51788104，51572150）资助的课题.

Authors and contacts

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Corresponding author:Chen Ai-Tian,aitian.chen@kaust.edu.sa;ygzhao@tsinghua.edu.cn; Zhao Yong-Gang,aitian.chen@kaust.edu.sa;ygzhao@tsinghua.edu.cn

Funds:Project supported by the National Basic Research Program of China (Grant No. 2015CB921402) and the National Natural Science Foundation of China (Grant Nos. 51788104, 51572150).

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Progress of converse magnetoelectric coupling effect in multiferroic heterostructures

摘要

Abstract

作者及机构信息

1.
2.
3.

通信作者:陈爱天,aitian.chen@kaust.edu.sa;ygzhao@tsinghua.edu.cn; 赵永刚,aitian.chen@kaust.edu.sa;ygzhao@tsinghua.edu.cn

Authors and contacts

1.
2.
3.

Corresponding author:Chen Ai-Tian,aitian.chen@kaust.edu.sa;ygzhao@tsinghua.edu.cn; Zhao Yong-Gang,aitian.chen@kaust.edu.sa;ygzhao@tsinghua.edu.cn

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Progress of converse magnetoelectric coupling effect in multiferroic heterostructures

摘要

Abstract

作者及机构信息

1.2.3.

通信作者:陈爱天,aitian.chen@kaust.edu.sa;ygzhao@tsinghua.edu.cn; 赵永刚,aitian.chen@kaust.edu.sa;ygzhao@tsinghua.edu.cn

Authors and contacts

1.2.3.

Corresponding author:Chen Ai-Tian,aitian.chen@kaust.edu.sa;ygzhao@tsinghua.edu.cn; Zhao Yong-Gang,aitian.chen@kaust.edu.sa;ygzhao@tsinghua.edu.cn

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