Magnetization reversal mechanism of ultra thin Nd2Fe14B films with perpendicular magnetic anisotropy

被引：6
|
作者：
Liu, Xiaoxi [1 ]
Shiozaki, Yoshiaki [1 ]
Morisako, Akimitsu [1 ]
机构：
[1] Shinshu Univ, Fac Engn, Nagano 3808553, Japan
来源：
JOURNAL OF APPLIED PHYSICS | 2008年 / 103卷 / 07期
关键词：
D O I：
10.1063/1.2829023
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The crystallographic and magnetic properties of sub-10-nm Nd2Fe14B films have been investigated. It is found that the magnetization reversal mechanism is changed in Nd-Fe-B films with the decrease of film thickness. Films with thickness greater than 10 nm show domain-wall-motion type of behavior. Strong exchange coupling between the grains makes the magnetic domain wall easily propagate in the films. Films with thickness of 4 nm show the Stoner-Wohlfarth particle behavior. The initial magnetization process is magnetization rotation. This is also verified by angular dependence of the coercivity. (C) 2008 American Institute of Physics.
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页数：3
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