Simplified expression of shielded MR head response for double-layer perpendicular medium

H. Muraoka; Y. Sugita; Y. Nakamura

doi:10.1109/20.800784

Simplified expression of shielded MR head response for double-layer perpendicular medium

H. Muraoka, Y. Sugita, Y. Nakamura

Research output: Contribution to journal › Article › peer-review

29 Citations (Scopus)

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' 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.

Original language	English
Pages (from-to)	2235-2237
Number of pages	3
Journal	IEEE Transactions on Magnetics
Volume	35
Issue number	5 PART 1
DOIs	https://doi.org/10.1109/20.800784
Publication status	Published - 1999
Externally published	Yes

Keywords

Double-layer medium
Mr head
Perpendicular magnetic recording
Reciprocity theorem

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

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10.1109/20.800784

Cite this

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AB - 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' 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.

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KW - Reciprocity theorem

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Simplified expression of shielded MR head response for double-layer perpendicular medium

Abstract

Keywords

ASJC Scopus subject areas

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