Micromagnetic study of magnetization reversal in patterned DyFeCo thin films

被引：0

作者：

Lee, Ching-Ming ^{[2
]}

Ye, L. X. ^{[2
]}

Lee, J. M. ^{[1
]}

Wu, Te-Ho ^{[1
]}

机构：

[1] Natl Yunlin Univ Sci & Technol, Grad Sch Engn Sci & Technol, Touliu 64002, Yunlin, Taiwan

[2] Natl Yunlin Univ Sci & Technol, Taiwan SPIN Res Ctr, Touliu 64002, Yunlin, Taiwan

来源：

PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE | 2007年 / 204卷 / 12期

关键词：

D O I：

10.1002/pssa.200777359

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Magnetization reversal in patterned perpendicular anisotropic DyFeCo films was investigated using micromagnetic simulations. The model consists of a square film of dimension 1 mu m x 1 mu m x 50 rim and a circular hole of diameter 500 nn on the top surface, with depth varying from 0-30 rim. The results show that for shallower holes the coercivity decreases rapidly with the hole depth, but for the deeper holes, the coercivity in the hole region is much larger than in the land region. Further analysis indicates the variation in coercivity is due to the narrow transition region formed near the hole boundary where the magnetization has a tilted distribution determined mainly by the competition between anisotropy and exchange interactions. The simulation results are qualitatively consistent with our previous experimental outcome. (c) 2007 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

引用

页码：4049 / 4052

页数：4

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