Analytic three-dimensional response function of a double-shielded magnetoresistive or giant magnetoresistive perpendicular head

Author

Shute, Hazel A. ; Wilton, David T. ; McKirdy, David McA ; Jermey, Peter M. ; Mallinson, John C.

Author_Institution

Dept. of Math. & Stat., Univ. of Plymouth, UK

Volume

42

Issue

5

fYear

2006

fDate

5/1/2006 12:00:00 AM

Firstpage

1611

Lastpage

1619

Abstract

Using the Fourier method, we have derived a three-dimensional, fully analytic model of a shielded magnetoresistive or giant magnetoresistive head for perpendicular replay. The head may include side shields. The field and the spectral response function are expressed in closed form. Here, we use the model to show the effect of varying the sensor-shield spacings and the air-bearing-surface-underlayer separation on the field and response of the sensor at high areal density.

Keywords

Fourier analysis; magnetic heads; perpendicular magnetic recording; Fourier method; air-bearing-surface-underlayer separation; digital recording; double-shielded magnetoresistive head; giant magnetoresistive perpendicular head; magnetic reading heads; magnetic recording head; perpendicular recording; perpendicular replay; response function; sensor-shield spacings; Finite element methods; Giant magnetoresistance; Magnetic analysis; Magnetic heads; Magnetic recording; Magnetic sensors; Mathematics; Perpendicular magnetic recording; Solid modeling; Statistics; Digital recording; magnetic recording/reading heads; mathematics; perpendicular recording;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2005.861829

Filename

1624576