Abstract

The domain structures in the Co(0001) film with a thickness of 200 nm containing Bloch lines are studied in this work using the 3D micromagnetic modeling method. It is shown that Bloch lines include Bloch points in the cases when the domain walls are vortex-like. The transformation processes of domain structures containing Bloch lines are considered in the course of the film magnetization to saturation and subsequent decrease in the magnetic field to the zero value (for the fields lying either in the film plane or along the normal to the film). The configurations of magnetization in Bloch lines are analyzed. It is demonstrated that Bloch lines with both vertical and horizontal segments arise upon the application of magnetic field forming some angle with the film plane.

中文翻译：

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Co（0001）薄膜磁化变化过程中畴壁精细结构的转变

摘要

在这项工作中，使用3D微磁建模方法研究了厚度为200 nm的含Bloch线的Co（0001）薄膜中的畴结构。结果表明，在畴壁呈涡旋状的情况下，Bloch线包括Bloch点。在薄膜磁化到饱和并随后将磁场减小到零值的过程中（对于位于薄膜平面中或沿薄膜法线的磁场），考虑了包含Bloch线的畴结构的转变过程。分析了布洛赫线中的磁化构型。已经证明，在施加与膜平面成一定角度的磁场时，会同时出现具有垂直段和水平段的布洛赫线。