Dependence of the vortex formation process on the perpendicular magnetic anisotropy constant in perpendicular magnetic tunnel junctions

被引：0
|
作者：
Yang, Maosen [1 ]
Fang, Liang [1 ]
Chi, Yaqing [2 ]
机构：
[1] Natl Univ Def Technol, Coll Comp, State Key Lab High Performance Comp, Changsha 410073, Hunan, Peoples R China
[2] Natl Univ Def Technol, Coll Comp, Inst Microelect, Changsha 410073, Hunan, Peoples R China
来源：
JAPANESE JOURNAL OF APPLIED PHYSICS | 2019年 / 58卷 / 01期
关键词：
SPIN TRANSFER TORQUE; CORE;
D O I：
10.7567/1347-4065/aaf0a7
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We investigate the dependence of the vortex formation process on the perpendicular magnetic anisotropy (PMA) constant in a perpendicular magnetic tunnel junction using micromagnetic simulations. Based on the different precession trajectories of magnetic moments, the formation process of a vortex can be divided into two different models: the first includes horizontal precession and damped oscillation, and the second includes damped oscillation only. The time of vortex formation has a nonmonotonic relationship with the PMA constant. By analyzing the variation trend of energies within the system, the underlying physical mechanism of the dependence of the vortex formation process on PMA constant is revealed. (C) 2019 The Japan Society of Applied Physics
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页数：5
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