Anti-parellel coupled soft under layers for high-density perpendicular recording

被引：56

作者：

Acharya, BR ^{[1
]}

Zhou, JN ^{[1
]}

Zheng, M ^{[1
]}

Choe, G ^{[1
]}

Abarra, EN ^{[1
]}

Johnson, KE ^{[1
]}

机构：

[1] MMC Technol, San Jose, CA 95131 USA

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2004年 / 40卷 / 04期

关键词：

adjacent track erasure; oxide media; perpendicular recording; recording performance; soft magnetic under layer;

D O I：

10.1109/TMAG.2004.832165

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 promising soft magnetic under layer (SUL) structure consisting of anti-parallel coupled soft layers (APS) is investigated to improve the performance of high-density perpendicular recording media. CoCrPt-O recording media with average grain diameter similar to6 nm, coercivity of 5 kOe and nucleation field of -2 kOe is fabricated on both conventional SUL and APS. Wide-area adjacent track erasure (ATE) is observed for conventional SUL, which increases at lower interlayer spacing (t(IL)). APS structure enables the suppression of ATE even UP to t(IL) = 10 nm. Moreover, APS leads to reduced dc erase noise and improved signal to noise ratio particularly for SUL thicknesses <100 nm.

引用

页码：2383 / 2385

页数：3

共 8 条

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