Calculating coercivity at finite T

Calculation of coercivity of magnetic nanostructures at finite temperatures.
D. Suess, L. Breth, J. Lee, M. Fuger, C. Vogler, F. Bruckner, B. Bergmair, T. Huber, and J. Fidler
Phys. Rev. B 84, 224421 (2011)

(a) Geometry and finite element mesh of the model of a granular grain. The initial magnetization and the saddle point configuration at the coercive field for a field applied 75◦ off the long axis of the particle is shown. These states are used for the calculation of the attempt frequency. (b) Angular dependence of the coercive field (μ0Hc) of a CoCrPtO granular medium. Black solid line, downward-pointing triangles: Experimental obtained values extracted from Ref. 32.