磁致多铁性物理与新材料设计  

Physics and design of magnetic multiferroics

作　　者：董帅[1] 向红军[2] 

机构地区：[1]东南大学物理系,南京211189 [2]复旦大学物理系计算物质科学教育部重点实验室应用表面物理国家重点实验室,上海200433

出　　处：《物理》2014年第3期173-182,共10页Physics

基　　金：国家自然科学基金(批准号:51322206,11274060,11104038);国家重点基础研究发展计划(批准号:2011CB922101,2012CB921400);高等学校博士学科点专项科研基金(批准号:20100092120032);新世纪优秀人才支持计划(批准号:NCET-10-0325,NCET-10-0351)资助项目;上海市东方学者项目

摘　　要：磁致多铁材料是多铁性材料大家族中的后起之秀,其特色在于其铁电性起源于特定的磁序,因此其铁电性与磁性紧密关联,具有本征的强磁电耦合效应。目前对磁致多铁性的研究以基础物理为主。随着对磁致多铁现象背后物理机制认识的不断深入,不断有新的磁致多铁材料被设计、预言和发现,其性能也在不断地提高。文章简要介绍了磁致多铁材料所涉及的基本物理机制,并根据这些已知的规律,回顾了近年来寻找和设计新的磁致多铁材料的经验。Magnetic multiferroics belong to an important branch of the big multiferroics family. Because the ferroelectric polarizations are directly induced by particular magnetic orders, magnetic multiferroics exhibit strong intrinsic magnetoelectric coupling. Current research on mag-netic multiferroics is mostly focused on their fundamental physics. Benefitting from the progress of research on physical mechanisms, more and more new magnetic multiferroic materials have been designed, predicted, and discovered, with continual improvement in their magnetoelectric per-formance. We review briefly the physical mechanisms involved in magnetic multiferroics, as well as the efforts in recent years to search for and design new magnetic multiferroics.

关 键 词：磁致多铁 Dzyaloshinskii-Moriya作用 交换收缩 磁序诱导铁电性统一极化模型 第一性原理计算 

分 类 号：O482.5[理学—固体物理]