Coercivity mechanism of sputtered NdDyFeB films on W/Si(111)

被引：5

作者：

Tsai, JL ^{[1
]}

Chin, TS ^{[1
]}

机构：

[1] Natl Tsing Hua Univ, Dept Mat Sci & Engn, Hsinchu 30043, Taiwan

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1999年 / 196卷

关键词：

strong domain-well pinning; activation volume; magnetic viscosity;

D O I：

10.1016/S0304-8853(98)00926-3

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Nd(Dy)FeB/W/Si(1 1 1) films were prepared by DC magnetron sputtering. Magnetization reversal process of the Nd(Dy)FeB films was found to be dominated by strong domain-wall pinning as elucidated using the Gaunt model. The maximum pinning energy (fb) of the him is equal to 2.57 x 10(-11) erg. Thermal activation volume is 1.41 x 10(-18) cm(3) measured by magnetic viscosity. Random-inhomogeneous pinning sites is explained more explicitly by HRTEM microstructure observation. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：728 / 730

页数：3

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