Characterization of anisotropy field dispersion in perpendicular media

被引:16
作者
Yuan, E [1 ]
Victora, RH [1 ]
机构
[1] Univ Minnesota, Dept Elect & Comp Engn, Minneapolis, MN 55455 USA
基金
美国国家科学基金会;
关键词
anisotropy field dispersion; micromagnetics; perpendicular recording; perpendicular recording media;
D O I
10.1109/TMAG.2004.829324
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
Two of the most publicized methods for anisotropy field dispersion characterization, the M-H loop method and the complex transverse susceptibility (TS) method, are evaluated with micromagnetic simulation. For the M-H loop method, the measured parameter is found to be dependent on grain saturation magnetization and easy axis dispersion, but only weakly dependent on intergranular exchange. It also depends on the dispersion of the anisotropy field as originally proposed. For the complex TS method, the technique is calculated to be most dependent on the intergranular exchange and exhibit little dependence on microstructure.
引用
收藏
页码:2452 / 2454
页数:3
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