Current Applied Physics ( IF 2.4 ) Pub Date : 2021-01-04 , DOI: 10.1016/j.cap.2020.12.008 H.-I. Choi , M.H. Lee , D.J. Kim , W.-J. Kim , T.K. Song , K.S. Choi
The Landau-Khalatnikov (LK) simulation was used to study magnetoelectric (ME) coupling phenomena in a composite system of magneto-strictive CoFe2O4 (CF) and piezoelectric BaTiO3 (BT) materials, CF-BT. By adding ME coupling term with coupling parameter , between polarization, and magnetization, of in thermodynamic free energy density functional for LK simulation, the hysteretic ME coupling coefficients, in CF-BT composite systems were well simulated and small changes of magnetic-field () dependent polarization, were calculated. The maximum values of are proportional to in the broad ranges of more than 7 orders of magnitude.
中文翻译:
CoFe 2 O 4 -BaTiO 3复合材料中磁电耦合的Landau-Khalatnikov模拟
用Landau-Khalatnikov(LK)模拟研究磁致伸缩CoFe 2 O 4(CF)和压电BaTiO 3(BT)材料CF-BT的复合系统中的磁电(ME)耦合现象。通过将ME耦合项与耦合参数相加在极化之间 和磁化 的 在LK模拟的热力学自由能密度函数中,磁滞ME耦合系数 在CF-BT复合系统中进行了很好的模拟并且磁场变化很小()依赖极化 被计算。的最大值 与...成正比 范围超过7个数量级。