Optimum design rule of hysteresis loop for ultrahigh density recording in single-layered perpendicular media

被引:4
作者
Lee, KJ [1 ]
Im, YH
Park, NY
Lee, TD
机构
[1] Samsung Adv Inst Technol, Storage Lab, Suwon 440600, South Korea
[2] Korea Adv Inst Sci & Technol, Dept Mat Sci & Engn, Taejon 305701, South Korea
关键词
hysteresis loop; micromagnetic calculation; perpendicular recording media; signal-to-noise ratio (SNR);
D O I
10.1109/20.996207
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
Micromagnetic studies have been performed to find optimum shape of hysteresis loop in a single-layered perpendicular medium for ultrahigh density recording. A good index that was inversely proportional to signal-to-noise ratio (SNR) was developed. By using this index, we found the optimum loop shape should have terms of the ratio of nucleation field to coercivity within -0.4 to -0.6, the loop slope within 2 to 4, and the ratio of grain thickness to grain diameter larger than 2.5.
引用
收藏
页码:801 / 804
页数:4
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