Simulation of the Brownian motion of the domain wall in a nonlinear force field of nanowires

被引：0
作者：
Anatoly A. Ivanov
Vitaly A. Orlov
机构：
[1] Siberian Federal University,
[2] Krasnoyarsk State Pedagogical University,undefined
来源：
The European Physical Journal B | 2015年 / 88卷
关键词：
Solid State and Materials;
D O I：
暂无
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摘要：
The paper proposes a computer simulation method of the thermo-fluctuational motion of domain walls in ferromagnetic polycrystalline nanowires, taking into account a non-linear force field of magnetic inhomogeneities. The method makes use of stochastic Langevin function. Into the Langevin equation we added a member describing random force pattern of domain wall fixation on magnetic inhomogeneities. A variety of statistic characteristics of domain wall propagation process have been obtained: magnetization jumps distribution, activation energies distribution, distribution of magnetization switch waiting times and distribution of magnetization jump times. Paper shows that it is incorrect to apply Einstein-Smoluchowski equation for particle’s thermo-fluctuational motion in non-linear force field pattern.
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