SNR improvement of granular perpendicular recording media

被引：18

作者：

Zheng, M ^{[1
]}

Choe, G ^{[1
]}

Chekanov, A ^{[1
]}

Demczyk, BG ^{[1
]}

Acharya, BR ^{[1
]}

Johnson, KE ^{[1
]}

机构：

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

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2003年 / 39卷 / 04期

关键词：

intermediate layer; perpendicular recording media; recording performance; soft magnetic underlayer;

D O I：

10.1109/TMAG.2003.813777

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：

In this paper, we address important issues on the performance improvement of perpendicular magnetic recording (PMR) media, such as noise reduction by adjusting the soft magnetic underlayer (SUL) properties and recording layer and intermediate layer modifications for optimum signal-to-noise (SNR) performance. The permeability of the SUL plays a significant role in writability and SNR. Proper pinning of the SUL should be considered for reducing spike noise. A systematic comparison of alloy and oxide granular media shows that optimized oxide media can provide both better SNR and good thermal stability and is promising for high-density recording.

引用

页码：1919 / 1924

页数：6

共 21 条

[1] Exchange-coupled CoZrNb/CoSm underlayer for perpendicular recording media [J].