Recording performance characteristics of granular perpendicular media

被引：5
|
作者：
Jiang, W [1 ]
Velu, EMT [1 ]
Malhotra, S [1 ]
Jung, HS [1 ]
Kwok, CK [1 ]
Bertero, G [1 ]
Wachenschwanz, D [1 ]
机构：
[1] Komag Inc, San Jose, CA 95131 USA
来源：
IEEE TRANSACTIONS ON MAGNETICS | 2005年 / 41卷 / 02期
关键词：
granular double-layer media; perpendicular recording; soft-underlayer (SUL) domain noise; synthetic antiferromagnetically-coupled (SAF) soft-underlayer;
D O I：
10.1109/TMAG.2004.838046
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：
The recording performance of CoCrPtO granular-type perpendicular media was examined with two types of perpendicular heads to demonstrate the importance of matching head and media designs in perpendicular recording. Shielded-pole heads with high write field gradients, field angles, and sufficient write field magnitude yielded superior writability and signal-to-noise ratio as compared to mono-pole heads. The recording performance dependences on head-to-medium spacing, interlayer thickness, and soft-underlayer (SUL) thickness were also weaker with the shielded-pole heads. In addition, the effect of stray fields on the SUL domain noise was investigated for a synthetic antiferromagnetically-coupled (SAF) SUL. A radial field close to the exchange field of the SAF SUL was found to induce domain noises that could potentially cause errors in recording systems.
引用
收藏
页码：587 / 592
页数：6
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