Multiferroicity: the coupling between magnetic and polarization orders

IF 35 1区 物理与天体物理 Q1 PHYSICS, CONDENSED MATTER Advances in Physics Pub Date : 2009-06-30 DOI:10.1080/00018730902920554
Kefeng Wang, Jun-Ming Liu, Zhifeng Ren
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引用次数: 1143

Abstract

Multiferroics, defined for those multifunctional materials in which two or more kinds of fundamental ferroicities coexist, have become one of the hottest topics of condensed matter physics and materials science in recent years. The coexistence of several order parameters in multiferroics brings out novel physical phenomena and offers possibilities for new device functions. The revival of research activities on multiferroics is evidenced by some novel discoveries and concepts, both experimentally and theoretically. In this review, we outline some of the progressive milestones in this stimulating field, especially for those single-phase multiferroics where magnetism and ferroelectricity coexist. First, we highlight the physical concepts of multiferroicity and the current challenges to integrate the magnetism and ferroelectricity into a single-phase system. Subsequently, we summarize various strategies used to combine the two types of order. Special attention is paid to three novel mechanisms for multiferroicity generation: (1) the ferroelectricity induced by the spin orders such as spiral and E-phase antiferromagnetic spin orders, which break the spatial inversion symmetry; (2) the ferroelectricity originating from the charge-ordered states; and (3) the ferrotoroidic system. Then, we address the elementary excitations such as electromagnons, and the application potentials of multiferroics. Finally, open questions and future research opportunities are proposed.
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多铁性:磁阶和极化阶之间的耦合
多铁性是指两种或两种以上基本铁性共存的多功能材料,是近年来凝聚态物理和材料科学研究的热点之一。多铁性中多个序参量的共存带来了新的物理现象,为器件的新功能提供了可能。多铁学研究活动的复兴是由一些实验和理论上的新发现和新概念所证明的。在这篇综述中,我们概述了这一激励领域的一些进展里程碑,特别是在磁性和铁电共存的单相多铁性材料中。首先,我们强调了多铁性的物理概念以及将磁性和铁电性集成到单相系统中的当前挑战。随后,我们总结了用于结合两种类型的顺序的各种策略。特别关注了三种新的多铁性产生机制:(1)自旋顺序(如螺旋和e相反铁磁自旋顺序)引起的铁电性破坏了空间反演对称性;(2)由电荷有序态产生的铁电性;(3)环铁系。然后,我们讨论了电子介子等基本激发,以及多铁性材料的应用潜力。最后,提出了有待解决的问题和未来的研究机会。
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来源期刊
Advances in Physics
Advances in Physics 物理-物理:凝聚态物理
CiteScore
67.60
自引率
0.00%
发文量
1
期刊介绍: Advances in Physics publishes authoritative critical reviews by experts on topics of interest and importance to condensed matter physicists. It is intended for motivated readers with a basic knowledge of the journal’s field and aims to draw out the salient points of a reviewed subject from the perspective of the author. The journal''s scope includes condensed matter physics and statistical mechanics: broadly defined to include the overlap with quantum information, cold atoms, soft matter physics and biophysics. Readership: Physicists, materials scientists and physical chemists in universities, industry and research institutes.
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