Triple-layer perpendicular recording media for high SN ratio and signal stability

被引：34
|
作者：
Ando, T
Nishihara, T
机构：
[1] Central RandD Center, Victor Company of Japan, Limited 58-7, Shinmei-cho, Yokosuka
来源：
IEEE TRANSACTIONS ON MAGNETICS | 1997年 / 33卷 / 05期
关键词：
D O I：
10.1109/20.617818
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：
Media noise, SN ratio, and signal stability of triple-layer (TL) perpendicular recording media are studied. The TL medium is composed of a CoCrTa perpendicular layer, an amorphous CoZrNb soft. magnetic layer, and a CoSm in-plane hard magnetic pinning layer. A high SN ratio is obtained due to the pinning effect of the CoSm Layer and with an optimum CoCrTa perpendicular layer of a 50-nm-thick Co-Cr20-Ta3.5at% (Ms =400 emu/cm(3)) film. High signal stability against stray magnetic fields is obtained ia TL media with a 600-nm-thick CoZrNb layer. Moreover, no thermal magnetic relaxations occurs in TL media at 60 degrees C for 5 hours and at room temperature for 15 hours. The TL media are promising as practical ultrahigh density recording media having high read-write reliability.
引用
收藏
页码：2983 / 2985
页数：3
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