Perpendicular write process and head design

Author

Williams, Mason ; Rettner, Charles ; Takano, Kentaro ; Weresin, Walter

Author_Institution

IBM Almaden Res. Center, San Jose, CA, USA

Volume

38

Issue

4

fYear

2002

fDate

7/1/2002 12:00:00 AM

Firstpage

1643

Lastpage

1646

Abstract

A potential advantage of perpendicular recording derives from the supposition that the perpendicular geometry, with the medium effectively in the write gap, permits higher anisotropy media for a given head saturation induction. We test these conjectures by looking in more detail at practical considerations limiting write field, using analytical approximations and finite element models, and report some experiments verifying the ability to write high coercive field media

Keywords

coercive force; digital magnetic recording; finite element analysis; magnetic heads; perpendicular magnetic anisotropy; perpendicular magnetic recording; anisotropy media; finite element models; head design; head saturation induction; high coercive field media; perpendicular geometry; perpendicular write process; write gap; Anisotropic magnetoresistance; Demagnetization; Magnetic anisotropy; Magnetic heads; Magnetostatics; Perpendicular magnetic anisotropy; Perpendicular magnetic recording; Process design; Saturation magnetization; Testing;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2002.1017749

Filename

1017749