Cross-Track Resolution of Readers With Shield Tabs

被引：1
|
作者：
Tuggle, Andrew [1 ,2 ]
Gider, Savas [2 ]
Mauri, Daniele [2 ]
Xi, Haiwen [2 ]
机构：
[1] Univ Alabama, Ctr Mat Informat Technol, Tuscaloosa, AL 35487 USA
[2] Western Digital, Magnet Head Operat, Fremont, CA 94539 USA
来源：
IEEE TRANSACTIONS ON MAGNETICS | 2014年 / 50卷 / 11期
关键词：
Magnetic recording; magnetic sensors; nanoscale devices; TMR read head;
D O I：
10.1109/TMAG.2014.2326077
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 study the effects of patterned shield tabs on the cross-track resolution of TMR read heads. Patterning tabs in the cross-track direction expands the design space in which to tune the magnetic width of the reader. We use a finite-element micromagnetic code to explore separately the effects of both the lower and upper shield tabs' thicknesses and intrinsic moments. Cross-track profiles can be narrowed by increasing the moment of a thin upper shield tab. The slight widening of profiles due to a bottom shield tab may not be detrimental to overall bit density and balanced by an overall gain in down-track resolution.
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页数：4
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