Title :
The role of the compensation temperature in thermomagnetic switching
Author :
Hansen, P. ; Witter, K.
Author_Institution :
Philips GmbH Forschungslab., Hamburg, West Germany
fDate :
11/1/1988 12:00:00 AM
Abstract :
Amorphous rare-earth-transition-metal alloys with different compensation temperatures, Tcomp, 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 Tcomp>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;
Journal_Title :
Magnetics, IEEE Transactions on
