Thermal effects and recording performance at high recording densities

Author

Alex, Michael ; Wachenschwanz, David

Author_Institution

Komag Inc., San Jose, CA, USA

Volume

35

Issue

5

fYear

1999

fDate

9/1/1999 12:00:00 AM

Firstpage

2796

Lastpage

2801

Abstract

Both dynamic coercivity and thermal decay were quantified by non-destructive spinstand measurements. Media composition was found to significantly affect the stability factor for films having comparable static magnetic properties. Signal decay correlated well with the stability factor as calculated from dynamic coercivity measurements. Monitoring the signal from a harmonic-eliminating pattern is seen to be a robust method for measuring decay. Pattern-dependent amplitude decay leads to enhanced non-linear distortion as thermal decay occurs in complex data patterns recorded at high densities

Keywords

coercive force; magnetic recording; magnetocaloric effects; thermal stability; dynamic coercivity; dynamic coercivity measurements; enhanced nonlinear distortion; films; harmonic-eliminating pattern; high recording densities; media composition; nondestructive spin-stand measurements; pattern-dependent amplitude decay; recording performance; stability factor; static magnetic properties; thermal decay; thermal effects; Coercive force; Demagnetization; Disk recording; Distortion measurement; High definition video; Magnetic properties; Magnetization; Thermal factors; Thermal stability; Writing;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.800988

Filename

800988