Distortion of inductive read head signal due to side-written magnetization

Author

Cannon, James A. ; Burke, Edward R. ; Gomez, Romel D. ; Madabhushi, Rajiv ; Mayergoyz, Isaak D.

Author_Institution

Dept. of Electr. Eng., Maryland Univ., College Park, MD, USA

Volume

32

Issue

6

fYear

1996

fDate

11/1/1996 12:00:00 AM

Firstpage

5265

Lastpage

5270

Abstract

We apply a Fourier series model to calculate distortion in an inductive read head signal due to side-written magnetization patterns in thin-film magnetic recording media. This model predicts that a magnetization pattern consisting of in-track longitudinal and transverse track edge magnetizations will produce a signal distorted by the flux from the side magnetization. By using parameters obtained from a direct magnetic image of the patterns, this analysis predicts the morphology and magnitude of signal distortion as a function of pattern dimensions. The implication of this distortion for higher bit densities suggested for the future was found to be significant. The proposed method will offer reliable means to quantitatively assess the effect of side writing at such densities

Keywords

Fourier series; magnetic heads; magnetic thin film devices; magnetisation; scanning tunnelling microscopy; Fourier series model; bit densities; direct magnetic image; in-track longitudinal magnetization; inductive read head signal; pattern dimensions; side-written magnetization; thin-film magnetic recording media; transverse track edge magnetization; Distortion; Fourier series; Image analysis; Magnetic films; Magnetic flux; Magnetic heads; Magnetic recording; Magnetization; Pattern analysis; Predictive models;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.545763

Filename

545763