Pressures on cylindrical magnetic domain walls
- 1 December 1970
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Magnetics
- Vol. 6 (4), 822-827
- https://doi.org/10.1109/tmag.1970.1066968
Abstract
The pressures on cylindrical magnetic domain walls are discussed with particular emphasis on bubbles, that is, near-circular domains. In the case of anisotropic wall energy, bubbles will be slightly elliptical, and a formula is derived relating the ellipticity to the anisotropic wall energy. Various formulations for the average magnetic field at a domain wall are presented. The problem of cutting bubbles off from a strip wall is investigated. It is seen that the field required to cut off a bubble can be up to 40 percent less than the 4&Msrequired to push two parallel walls together for certain geometriesKeywords
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