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Two‐Dimensional Bloch‐Type Domain Walls in Ferromagnetic Films

 

作者: A. E. LaBonte,  

 

期刊: Journal of Applied Physics  (AIP Available online 1969)
卷期: Volume 40, issue 6  

页码: 2450-2458

 

ISSN:0021-8979

 

年代: 1969

 

DOI:10.1063/1.1658014

 

出版商: AIP

 

数据来源: AIP

 

摘要:

The structure of a two‐dimensional 180° Bloch‐type domain wall in a ferromagnetic film has been generated directly from an iterative micromagnetic energy minimization. The resultant magnetization distribution (which varies through the thickness of the film as well as in the plane of the film perpendicular to the wall) is observed to be significantly different from previous one‐dimensional models. The equilibrium wall structure is characterized by extensive flux closure internal to the film, very low pole densities on the film surfaces, asymmetry in the magnetization distribution perpendicular to the wall, and an approximately linear dependence of the over‐all wall width on film thickness. Finally, it is found that the total wall energy in this two‐dimensional model is less than one‐half the comparable value predicted from the most accurate one‐dimensional treatment for 1000 Å Permalloy films and less than one‐third the corresponding one‐dimensional value at 2000 Å.

 

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