Readback responses in three dimensions tor multilayered recording media configurations

被引:17
|
作者
Wood, Roger W. [2 ]
Wilton, David T. [1 ]
机构
[1] Univ Plymouth, Sch Math & Stat, Plymouth PL4 8AA, Devon, England
[2] Hitachi Global Storage Technol, San Jose, CA 95193 USA
关键词
anisotropic permeability; DC null; frequency response; layered media; magnetic recording; 3-D response;
D O I
10.1109/TMAG.2008.920525
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
We have applied a technique for modeling the transmission of three-dimensional (3-D) magnetic fields through an arbitrary number of layers of a layered structure to the specific case of a recording medium in order to study and explain the readback response for a variety of perpendicular recording configurations. We examine in particular the low-frequency response associated with flux-flow in the soft underlayer and the behavior of the main response for finite. read and write widths. Our work leads to a useful analytic approximation for the 3-D on-track readback response.
引用
收藏
页码:1874 / 1890
页数:17
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