Magnetic film thickness effects on the recording performance of perpendicular media

被引：2

作者：

Chen, JP ^{[1
]}

Richter, HJ ^{[1
]}

Chen, DQ ^{[1
]}

Chang, CH ^{[1
]}

Ranjan, R ^{[1
]}

Lee, JL ^{[1
]}

机构：

[1] Seagate Technol LLC, Fremont, CA 94538 USA

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2004年 / 40卷 / 02期

关键词：

magnetic recording; perpendicular recording media; signal-to-noise ratio;

D O I：

10.1109/TMAG.2004.824104

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：

This paper reports on a systematic study of the effect of magnetic film thickness on the recording performance of perpendicular double-layered media. We found that the signal-to-noise ratio of the media decreases with increasing film thickness. This is mainly caused by the poorer head field gradient that results from the increased gap between the pole surface of the head and the top of the soft underlayer of the media. A theoretical study confirms the experimental findings.

引用

页码：489 / 491

页数：3

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