Effects of Co addition on microstructure and magnetic properties of ferromagnetic CoFeSiB alloy films

被引：18
|
作者：
Chun, B. S. [1 ,7 ]
Kim, S. D. [1 ]
Kim, Y. S. [1 ]
Hwang, J. Y. [2 ,6 ]
Kim, S. S. [2 ]
Rhee, J. R. [2 ]
Kim, T. W. [3 ]
Hong, J. P. [4 ]
Jung, M. H. [5 ]
Kim, Y. K. [1 ]
机构：
[1] Korea Univ, Dept Mat Sci & Engn, Seoul, South Korea
[2] Sookmyung Womens Univ, Dept Phys, Seoul, South Korea
[3] Sejong Univ, Dept Nanotechnol & Adv Mat Engn, Seoul, South Korea
[4] Hanyang Univ, Dept Phys, Seoul 133791, South Korea
[5] Sogang Univ, Dept Phys, Seoul 100611, South Korea
[6] Hanyang Univ, Dept Elect & Commun Engn, Seoul 133791, South Korea
[7] Univ Idaho, Dept Chem & Mat Engn, Moscow, ID 83843 USA
来源：
ACTA MATERIALIA | 2010年 / 58卷 / 08期
基金：
新加坡国家研究基金会;
关键词：
Amorphous materials; Magnetic thin films; Magnetic properties; Crystal structure; NEEL TEMPERATURE; FIELD-DEPENDENCE; HYSTERESIS; ANISOTROPY;
D O I：
10.1016/j.actamat.2010.01.006
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A correlation between composition, microstructure, and magnetic properties of sputter-deposited CoFeSiB alloy films has been studied Various analytical tools and micromagmetic models were employed to understand the details of microstructural evolution and magnetic reversal processes, respectively The CoFeSiB alloy film shows significantly different microstructure and magnetic properties depend on the Co concentration When the Co concentration is below 75 at %, the alloy has an amorphous phase exhibiting magnetic softness with negative remanence Meanwhile, beyond 75 at %, the structure consists of nanocrystals precipitated in the amorphous matrix, which becomes magnetically hard with positive remanence as well as antiferromagnefic exchange coupling (C) 2010 Acta Materialia Inc Published by Elsevier Ltd All rights reserved
引用
收藏
页码：2836 / 2842
页数：7
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