Non-Arrhenius Temperature Dependence of Magnetic After Effect
L Swartzendruber, P Rugkwamsook, Lawrence H. Bennett, Edward Della Torre
The rate of magnetization change (magnetic aftereffect) which occurs after the magnetic field applied to a magnetic material is switched suddenly to a new value, is generally assumed to increase when the temperature is increased Deviation from this temperature behavior, which has been observed in several cases, has been ascribed to changes in pertinent magnetic properties, such as magnetocrystalline anisotropy, activation volume, coercive field, etc., with temperature. We report here on the magnetic affereffect temperature dependence of a magnetic aftereffect temperature dependence of a magnetic recording material with magnetic properties that change very little with temperature over a wide temperature range but which, nevertheless, deviates considerably from a monotonic increase in decay rate with increasing temperature. We postulate that this behavior might be explained by assuming that the magnon energy distribution obeys Bose-Einstein statistics.
Journal of Applied Physics
magnetic aftereffect, magnetocrystalline anisotropy, non-arrhenius temperature dependence
, Rugkwamsook, P.
, Bennett, L.
and Della, E.
Non-Arrhenius Temperature Dependence of Magnetic After Effect, Journal of Applied Physics
(Accessed February 24, 2024)