Perpendicular recording model of medium and head field saturation effects

Author

Plumer, Martin ; van Ek, Jan

Author_Institution

Seagate Technol., Bloomington, MN, USA

Volume

38

Issue

5

fYear

2002

fDate

9/1/2002 12:00:00 AM

Firstpage

2057

Lastpage

2059

Abstract

A previously developed micromagnetic recording model is extended here for perpendicular recording media with a soft under layer. Write head field saturation effects are examined and shown to have a severely detrimental effect on the quality of recorded transitions. An extension of the model to account for a source of medium switching field distribution is used to study the degradation of amplitude and medium SNR with increasing linear density.

Keywords

grain size; magnetic heads; magnetic recording noise; magnetic switching; perpendicular magnetic recording; soft magnetic materials; amplitude degradation; linear density; medium SNR; medium switching field distribution; micromagnetic recording model; perpendicular recording model; recorded transition quality; soft under layer; write head field saturation effects; Anisotropic magnetoresistance; Degradation; Grain size; Magnetic anisotropy; Magnetic heads; Micromagnetics; Perpendicular magnetic anisotropy; Perpendicular magnetic recording; Saturation magnetization; Space vector pulse width modulation;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2002.802697

Filename

1042089