Akademik Veri Yönetim Sistemi
Physical Review E, cilt.108, sa.1, 2023 (SCI-Expanded)
In the present paper, we investigate the effects of disorder on the reversal time (Formula Presented) of classical anisotropic Heisenberg ferromagnets in three dimensions by means of Monte Carlo simulations. Starting from the pure system, our analysis suggests that Formula Presented increases with increasing anisotropy strength. On the other hand, for the case of randomly distributed anisotropy, generated from various statistical distributions, a set of results is obtained: (i) For both bimodal and uniform distributions, the variation of Formula Presented with the strength of anisotropy strongly depends on temperature. (ii) At lower temperatures, the decrement in Formula Presented with increasing width of the distribution is more prominent. (iii) For the case of normally distributed anisotropy, the variation of Formula Presented with the width of the distribution is nonmonotonic, featuring a minimum value that decays exponentially with the temperature. Finally, we elaborate on the joint effect of longitudinal (Formula Presented) and transverse (Formula Presented) fields on Formula Presented, which appear to obey a scaling behavior of the form Formula Presented.