Stable magnetostructural coupling with tunable magnetoresponsive effects in hexagonal ferromagnets
Stable magnetostructural coupling with tunable magnetoresponsive effects in hexagonal ferromagnets
复制标题
六角形铁磁体中具有可调磁响应效应的稳定磁结构耦合
DOI：
10.1038/ncomms1868
复制
发表时间：
2012-05-01
影响因子：
16.6
通讯作者：
de Boer, Frank
中科院分区：
文献类型：
--
作者：
Liu, Enke;Wang, Wenhong;de Boer, Frank
在马氏体相变系统中，结构相变和磁相变之间的磁结构耦合对磁响应效应具有至关重要的作用。基于这种耦合的各种磁响应效应的组合可以促进主体材料的多功能应用。在这里，我们证明了在350至70 K的宽温度窗口，结合可调磁响应效应，在MnNiGe：Fe合金中获得稳定的磁结构耦合的可行性。该合金表现出从顺磁性奥氏体到铁磁性马氏体的磁场诱导马氏体转变。结果表明，在六方晶系相变体系中，稳定的磁结构耦合是获得宽调谐范围磁响应效应的有效途径。
The magnetostructural coupling between the structural and the magnetic transition has a crucial role in magnetoresponsive effects in a martensitic-transition system. A combination of various magnetoresponsive effects based on this coupling may facilitate the multifunctional applications of a host material. Here we demonstrate the feasibility of obtaining a stable magnetostructural coupling over a broad temperature window from 350 to 70 K, in combination with tunable magnetoresponsive effects, in MnNiGe:Fe alloys. The alloy exhibits a magnetic-field-induced martensitic transition from paramagnetic austenite to ferromagnetic martensite. The results indicate that stable magnetostructural coupling is accessible in hexagonal phase-transition systems to attain the magnetoresponsive effects with broad tunability.