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Relaxation times and cell size in nonzero-temperature micromagnetics

机译:非零温度微磁中的弛豫时间和晶胞大小

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In nonzero-temperature micromagnetics the intrinsic magnetic parameters depend on the computational cell size. For large cells the experimentally measured, only temperature dependent intrinsic properties can be used. For simulations on an atomistic level the experimentally measured zero-temperature values can be applied. In between, the intrinsic magnetic properties follow scaling laws which can be derived from Metropolis Monte Carlo simulations. Equilibrium magnetization states and thermally activated switching processes of small ferromagnetic cubes were calculated. With proper scaling of the material parameters the numerical results were found to be almost independent of the computational cell size. (c) 2005 Elsevier B.V. All rights reserved.
机译:在非零温度微磁学中,固有磁学参数取决于计算单元的大小。对于通过实验测量的大型电池,只能使用依赖于温度的固有特性。对于在原子水平上的仿真,可以应用实验测量的零温度值。在这两者之间,固有磁性能遵循比例定律,该定律可以从Metropolis Monte Carlo模拟得出。计算了小的铁磁立方体的平衡磁化状态和热激活开关过程。通过适当缩放材料参数,发现数值结果几乎与计算像元大小无关。 (c)2005 Elsevier B.V.保留所有权利。

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