Abstract

Hysteresis of the electric polarization of a two-layer exchange-coupled ferromagnetic film whose layers have the easy-plane and easy-axis anisotropy upon magnetization reversal is studied numerically. The magnetization reversal was carried out by a magnetic field perpendicular to the film plane from the saturation state along the easy magnetization axis. The dependences of the average electric polarization and the reduced magnetization of the film layers on the external magnetic field strength are constructed. The feasibility of sign reversal of the electric polarization in a magnetic field in films whose thickness is smaller than the transverse dimensions is found. No polarization sign reversal is observed in thicker films upon magnetization reversal.

中文翻译：

---

具有磁化垂直分布的两层铁磁薄膜的电极化磁滞

摘要

数值研究了两层交换耦合铁磁膜在磁化反转时具有易平面和易轴各向异性的极化磁滞现象。从饱和状态沿着易磁化轴通过垂直于膜平面的磁场进行磁化反转。构造了平均极化和薄膜层磁化强度降低对外部磁场强度的依赖性。发现厚度小于横向尺寸的膜中的电场中的极化极性反转的可行性。磁化反转后，在较厚的薄膜中未观察到极化迹象反转。