Transition between Bloch and Ne´el Walls
作者:
E. J. Torok,
A. L. Olson,
H. N. Oredson,
期刊:
Journal of Applied Physics
(AIP Available online 1965)
卷期:
Volume 36,
issue 4
页码: 1394-1399
ISSN:0021-8979
年代: 1965
DOI:10.1063/1.1714317
出版商: AIP
数据来源: AIP
摘要:
The transition between Ne´el and Bloch walls is shown to be gradual rather than abrupt, resulting in a wall with Ne´el and Bloch components superposed. For films thick enough so that such a transition can occur, the wall is a pure Ne´el wall if &phgr;f, the acute angle between the wall normal in the plane of the film and the magnetization at the edge of the wall (half the angle between the magnetization vectors in the two domains separated by the wall) is less than a critical value. For &phgr;flarger than that critical value but less than &pgr;/2, the wall contains both Ne´el and Bloch components. When &phgr;fis &pgr;/2, i.e., a 180° wall, the wall is of the pure Bloch type; however, this situation is often unstable, resulting in a transition wall with the Ne´el component reversing periodically in distance along the wall in a crosstie‐like structure. These conclusions are supported by Lorentz micrographs.
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