Origin of hysteretic magnetoelastic behavior in magnetoelectric 2-2 composites
Origin of hysteretic magnetoelastic behavior in magnetoelectric 2-2 composites
复制标题
DOI：
10.1063/1.4901948
复制
发表时间：
2014-11-17
影响因子：
4
通讯作者：
McCord, Jeffrey
中科院分区：
文献类型：
--
作者：
Urs, Necdet Onur;Teliban, Iulian;McCord, Jeffrey
铁磁/压电磁电复合材料的磁致伸缩相的局部磁化行为相比，滞后响应，使用先进的磁光成像。局部磁弹性弛豫导致在磁相中形成磁化调制的分支畴结构。这导致了由互锁域过程控制的复杂场响应。磁畴的形成和压磁响应的相互关系，推导出滞后磁电响应的起源。结果，畴壁诱导效应导致磁电信号的降低。控制磁畴的形成过程是实现可逆磁电行为的基础。(C)2014 AIP Publishing LLC.
The local magnetization behavior of the magnetostrictive phase of ferromagnetic/piezoelectric magnetoelectric composites is compared to the hysteretic response using advanced magneto-optical imaging. Local magnetoelastic relaxation leads to the formation of magnetization modulated branched domain structures in the magnetic phase. This results in a complex field response governed by interlocking domain processes. An interrelation of magnetic domain formation and the piezomagnetic response is derived, revealing the origin of the hysteretic magnetoelectric response. As a result, domain wall induced effects lead to a reduction of magnetoelectric signal. Controlling the magnetic domain formation processes is the foundation for reversible magnetoelectric behavior. (C) 2014 AIP Publishing LLC.