Effect of a Magnetic Field on the Superparamagnetic Relaxation Time
作者： Amikam Aharoni
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摘要: The relaxation time for the fluctuations in direction of magnetization vector is calculated very fine, single-domain ferromagnetic particles which have a uniaxial (shape or crystalline) anisotropy. A magnetic field assumed to be applied parallel easy axis, and computed various magnitudes this field. It found that commonly used approximation high-energy barriers about as justified case zero field, down order $\mathrm{kT}$.
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