DocumentCode
1261079
Title
Simplified expression of shielded MR head response for double-layer perpendicular medium
Author
Muraoka, H. ; Sugita, Y. ; Nakamura, Y.
Author_Institution
Res. Inst. of Electr. Commun., Tohoku Univ., Sendai, Japan
Volume
35
Issue
5
fYear
1999
fDate
9/1/1999 12:00:00 AM
Firstpage
2235
Lastpage
2237
Abstract
An approximated simple expression of MR head response was given for perpendicular double-layer media. The equation was derived by modifying Fan´s equation so as to be of a nonintegral form. The validity was confirmed by comparisons with exact solutions of the Fan´s equation, which resulted in errors of less than 10% for practical applications of recent MR heads. Using the expression, the reciprocity theorem revealed that the measured transition length of perpendicular recording was extremely small, less than 10 nm
Keywords
magnetic heads; magnetoresistive devices; perpendicular magnetic recording; Fan´s equation; double-layer perpendicular medium; perpendicular recording; reciprocity theorem; shielded MR head response; transition length; Integral equations; Length measurement; Magnetic heads; Magnetic sensors; Magnetic separation; Magnetic shielding; Mirrors; Permeability; Perpendicular magnetic recording;
fLanguage
English
Journal_Title
Magnetics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9464
Type
jour
DOI
10.1109/20.800784
Filename
800784
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