Cross-tie domain wall ground state in thin films
Cross-tie domain wall ground state in thin films
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DOI：
10.1007/s10909-005-3924-1
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发表时间：
2005-04-01
影响因子：
2
通讯作者：
Metlov, KL
中科院分区：
文献类型：
--
作者：
Metlov, KL
横结畴壁是一种复杂的二维磁畴壁结构，通常在实验上发现于厚度约为几个交换长度的软磁薄膜中。这种壁的结构可以粗略地想象为一系列磁涡旋和反涡旋，沿沿着一条直线排列。在这项工作中，不同的一维磁畴壁的配置，存在于薄软铁磁薄膜的平衡能量计算（充分考虑交换和长程偶极相互作用），基于各种经典的里兹模型。将它们与二维交叉束缚畴壁的能量进行比较，从而估计薄膜厚度的区域，其中交叉束缚结构是能量最低的畴壁配置。首次估计了该区域的上边界。方便的近似解析能量表达式的初等函数在这里给出的经典和交叉结畴壁。
Cross-tie domain wall is a complex two dimensional magnetic domain wall structure, often found experimentally in thin soft ferromagnetic films with thicknesses of about several exchange lengths. The structure of such a wall can roughly be imagined as a sequence of magnetic vortices and anti-vortices, arranged along a straight line. In this work, equilibrium energies of different one-dimensional magnetic domain wall configurations, existing in thin soft ferromagnetic films, are calculated (fully taking into account the exchange and long range dipolar interaction), based on the various classical Ritz models. They are compared to the energy of two-dimensional cross-tie domain wall, thus, estimating the region of the film thicknesses, where the cross-tie structure is the lowest energy domain wall configuration. The upper boundary of this region is estimated here for the first time. Convenient approximate analytical energy expressions in terms of elementary functions are given here both for classical and for cross-tie domain walls.