Thermal switching rate of a ferromagnetic material with uniaxial anisotropy

Details Thermal switching rate of a ferromagnetic material with uniaxial anisotropy Thermal switching rate of a ferromagnetic material with uniaxial anisotropy

2012-01-26

arxiv.org/abs/1201.5460v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 1 figure, submitted

Scientific paper

The field dependence of the thermal switching rate of a ferromagnetic material with uniaxial anisotropy was studied by solving the Fokker-Planck equation. We derived the analytical expression of the thermal switching rate using the mean first-passage time approach, and found that Brown's formula [Phys. Rev. 130, 1677 (1963)] is applicable even in the low barrier limit by replacing the attempt frequency with the proper factor which is expressed by the error function.

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