Newly developed inductive write head with electroplated CoNiFe film

被引:55
作者
Ohashi, K [1 ]
Yasue, Y
Saito, M
Yamada, K
Osaka, T
Takai, M
Hayashi, K
机构
[1] NEC Ibaraki Ltd, Ibaraki, Osaka 30801, Japan
[2] NEC Corp, Fuchu, Tokyo 183, Japan
[3] Waseda Univ, Shinjuku Ku, Tokyo 169, Japan
关键词
CoNiFe alloy; electroplating; corrosion resistance; high B-s material; MR head; write head;
D O I
10.1109/20.706583
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
A newly developed CoNiFe film is investigated from the viewpoint of its application to MR write heads. Film composition is Co65Ni12Fe23, prepared by electroplating to obtain a b.c.c. plus f.c.c. mixed phase at that composition. Films with mixed phases improve soft magnetic properties (B-s is 2.0-2.1 T and the magnetostriction coefficient is +1.8x10(-6) to +7.4x10(-6)) and also show improved corrosion resistance. Performance of a head with a double layer structure of a 0.3 mu m CoNiFe film and a 4.1 mu m NiFe film is investigated, and a short throat height is found to give better overwrite performance.
引用
收藏
页码:1462 / 1464
页数:3
相关论文
共 10 条