Write field asymmetry in perpendicular magnetic recording

被引：3
|
作者：
Li, Zhanjie [1 ]
Bai, Daniel Z. [1 ]
Lin, Ed [1 ]
Mao, Sining [1 ]
机构：
[1] Western Digital Corp, Fremont, CA 94539 USA
来源：
JOURNAL OF APPLIED PHYSICS | 2012年 / 111卷 / 07期
关键词：
RISE-TIME; HEAD;
D O I：
10.1063/1.3679138
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We present a systematic study of write field asymmetry by using micromagnetic modeling for a perpendicular magnetic recording (PMR) writer structure. Parameters investigated include initial magnetization condition, write current amplitude, write current frequency, and initial write current polarity. It is found that the write current amplitude and frequency (data rate) are the dominant factors that impact the field asymmetry. Lower write current amplitude and higher write current frequency will deteriorate the write field asymmetry, causing recording performance (such as bit error rate) degradation. (C) 2012 American Institute of Physics. [doi:10.1063/1.3679138]
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页数：3
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