The role of the compensation temperature in thermomagnetic switching

Author

Hansen, P. ; Witter, K.

Author_Institution

Philips GmbH Forschungslab., Hamburg, West Germany

Volume

24

Issue

6

fYear

1988

fDate

11/1/1988 12:00:00 AM

Firstpage

2317

Lastpage

2319

Abstract

Amorphous rare-earth-transition-metal alloys with different compensation temperatures, Tcom_p, exhibit pronounced differences in the temperature characteristics of the coercivity in the high-temperature range. This is of primary importance for the thermomagnetic switching process in which the domain radius, domain regularity, or domain jitter must be controlled. The influence of the coercivity profile on these parameters has been investigated for alloys with Tcom_p>100 K. The radial dependences of the driving fields acting on the domain wall are calculated using experimental data for the saturation magnetization, uniaxial anisotropy, and coercivity

Keywords

coercive force; magnetic domain walls; magnetic properties of amorphous substances; rare earth alloys; thermomagnetic recording; transition metal alloys; amorphous; coercivity; compensation temperature; domain jitter; domain radius; domain regularity; domain wall; driving fields; rare-earth-transition-metal alloys; saturation magnetization; temperature characteristics; thermomagnetic switching; uniaxial anisotropy; Amorphous materials; Anisotropic magnetoresistance; Coercive force; Magnetic domain walls; Magnetic field measurement; Magnetic switching; Saturation magnetization; Temperature dependence; Temperature distribution; Writing;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.92097

Filename

92097