Electric field control of exchange-spring behavior
Electric field control of exchange-spring behavior
复制标题
DOI：
10.1063/1.4916242
复制
发表时间：
2015-03
影响因子：
3.2
通讯作者：
Yue Zhang;Qianqian Zhou;Jinjun Ding;Zhi Yang;B. Zhu;Xiaofei Yang;Shi Chen;Jun Ou-Yang
中科院分区：
文献类型：
--
作者：
Yue Zhang;Qianqian Zhou;Jinjun Ding;Zhi Yang;B. Zhu;Xiaofei Yang;Shi Chen;Jun Ou-Yang
我们使用微磁模拟方法研究压电/ES多层中交换弹簧（ES）行为的电场控制。在复合材料中，PZT或PZN-PT形成压电基板，而ES双层由硬磁（HM）CoFe2O4（CFO）和软磁（SM）Fe3O4或Co43Fe43B14材料组成。将应力作为电场强度 (E) 和外部磁场的函数设置为在平面内对齐。结果揭示了 PZN-PT/Co43Fe43B14/CFO 系统中的电敏感磁特性。该系统中的ES双层经历了从刚性磁性到ES行为的转变，E从2 MV/m变为-2 MV/m。与 E 相关的成核场和转换场表现出对 HM 相和 SM 相之间的厚度比的强烈依赖性。此外，当磁场与 HM 或 SM 相的易轴成锐角时，在负 E 偏置下观察到多跳磁滞回线。这些结果可能归因于...
We study the electric field control of exchange-spring (ES) behavior in a piezoelectric/ES multi-layer using the micromagnetic simulation method. In the composite, PZT or PZN-PT forms the piezoelectric substrate, while the ES bilayer is composed of hard-magnetic (HM) CoFe2O4 (CFO) and soft-magnetic (SM) Fe3O4 or Co43Fe43B14 materials. The stress as a function of electric-field strength (E) and the external magnetic field was set to align in plane. The results reveal an E-sensitive magnetic property in the PZN-PT/Co43Fe43B14/CFO system. The ES bilayer in this system experienced a transition from rigid magnetism to ES behavior with E changing from 2 MV/m to −2 MV/m. The E-related nucleation field and switching field exhibit strong dependences on the thickness ratio between the HM and SM phases. Additionally, when the magnetic field was applied at an acute angle to the easy axis of the HM or the SM phase, a multi-jump hysteresis loop was observed under a negative E bias. These results may be attributed to a ...