Domain reversal simulation for anisotropy-energy fluctuation

被引：14

作者：

Choe, SB ^{[1
]}

Shin, SC

机构：

[1] Korea Adv Inst Sci & Technol, Ctr Nanospin Spintron Mat, Taejon 305701, South Korea

[2] Korea Adv Inst Sci & Technol, Dept Phys, Taejon 305701, South Korea

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2000年 / 36卷 / 05期

关键词：

anisotropy variation; domain reversal; micromagnetic simulation; structural irregularity; thin films;

D O I：

10.1109/20.908724

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Influence of a nonuniform anisotropy distribution on domain reversal dynamics in ferromagnetic thin films has been investigated. A micromagnetic model has been developed adopting a Monte Carlo algorithm to examine the thermally activated reversal process. In this study, the uniaxial magnetic anisotropy magnitude is spatially nonuniform, Interestingly, the simulation results demonstrate the crucial importance of the nonuniform anisotropy variation on the domain reversal dynamics, The reversal behavior is altered from wall-motion dominant to nucleation dominant with a small change in the spatial anisotropy distribution.

引用

页码：3167 / 3169

页数：3