Domain branching in uniaxial ferromagnets: asymptotic behavior of the energy

Domain branching in uniaxial ferromagnets: asymptotic behavior of the energy
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单轴铁磁体中的磁畴分支:能量的渐近行为

DOI:
10.1007/s00526-009-0281-y
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发表时间:
2010
影响因子:
2.1
通讯作者:
T. Viehmann
T. Viehmann
中科院分区:
数学2区
文献类型:
--
作者:
F. Otto;T. Viehmann

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在本文中,我们分析了具有强单轴各向异性的铁磁性块体样品在具有磁区分支的区域中的基态能量。在Γ极限的精神下,我们推导出微磁能向尖锐界面能的收敛。然后,我们使用这种收敛来严格地证明每横截面面积能量最小的概念。与已知结果相比,最小能量的标度界被改进为一个渐近相等。
In this article we analyze the ground state energy of a ferromagnetic bulk sample with strong uniaxial anisotropy in a regime featuring domain branching. We derive the convergence of the micromagnetic energy towards a sharp interface energy in the spirit of Γ-limits. Then we use this convergence to rigorously justify the notion of a minimal energy per cross-section area. Compared to known results, the scaling bounds for the minimal energy are improved to an asymptotic equality.
算子方程的优化一般稀疏网格近似空间
DOI: 10.1090/s0025-5718-09-02248-0
发表时间: 2009
期刊: Math. Comput.
影响因子: --
作者:
M. Griebel;S. Knapek
通讯作者: S. Knapek