Characteristics of thermally assisted magnetic recording

Author

Alex, Michael ; Tselikov, Alexander ; McDaniel, Terry ; Deeman, Neil ; Valet, Thierry ; Chen, David

Author_Institution

Seagate Magnetics, Fremont, CA, USA

Volume

37

Issue

4

fYear

2001

fDate

7/1/2001 12:00:00 AM

Firstpage

1244

Lastpage

1249

Abstract

Extensive thermally assisted recording measurements were performed on isotropic longitudinal media. The dynamic coercivity decrease provided by thermal assistance was quantified by spin stand measurements. Thermally assisted recording performance was found to equal the performance of conventional (nonthermally assisted) recording at significantly reduced values of write current. This reduction in write current is consistent with the coercivity decrease that occurs during the thermally assisted writing process

Keywords

coercive force; magnetic anisotropy; magnetic recording noise; thermomagnetic recording; SNR contours; areal recording density; dynamic coercivity decrease; isotropic longitudinal media; optical power effect; spin stand measurements; thermal assistance; thermally assisted magnetic recording; thermally assisted writing process; write current; Anisotropic magnetoresistance; Coercive force; Grain size; Heat-assisted magnetic recording; Magnetic recording; Optical recording; Performance evaluation; Perpendicular magnetic recording; Signal to noise ratio; Writing;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.950808

Filename

950808