Observation of Recording Pole Instability in Perpendicular Recording

Author

Taratorin, Alexander M. ; Klaassen, Klaas B.

Author_Institution

San Jose Res. Center, CA

Volume

42

Issue

10

fYear

2006

Firstpage

2267

Lastpage

2269

Abstract

Down- and cross-track distributions of medium magnetization are determined by the recording pole field profile and the switching dynamics. Earlier studies of the write pole footprint in perpendicular magnetic recording revealed asymmetrical media saturation caused by magnetic pole nonuniformity. In this paper, we report variable footprint shapes indicating recording pole instability. We extend our spin-stand "footprint" measurements to also evaluate recording pole instability

Keywords

magnetic materials; magnetisation; perpendicular magnetic recording; spin dynamics; asymmetrical media saturation; cross-track distribution; down-track distribution; magnetic instability; magnetic pole nonuniformity; medium magnetization; perpendicular magnetic recording; recording pole field profile; recording pole instability; switching dynamics; Helium; Magnetic field measurement; Magnetic heads; Magnetic recording; Magnetic switching; Perpendicular magnetic recording; Saturation magnetization; Servomechanisms; Shape; USA Councils; Magnetic instability; media saturation; overwrite; perpendicular magnetic recording;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2006.878633

Filename

1704268