RESEARCH IN FERROMAGNETICS WITH APPLICATIONS TO NEW STORAGE DEVICES.
Abstract
The magnetization distribution is calculated for Neel wall finite in thickness but infinite in the other two dimensions. The variational technique yields a solution in terms of elliptic functions that is different from, but a good approximation of, other models based on finite film thickness. The charge density is calculated as a beginning toward accurately determining the interaction field of two Neel walls, each of which in in one of a pair of close-spaced films. The results of a study of edge effects in tapered edge films are reported and the methods used to produce these films are described. Experimental evidence is presented which verifies the presence of the theoretically predicted magnetization 'curling' configuration. The 'tapered edge curling' theory is further supported by the absense of the higher energy 'closure domain' configuration. Studies of domain wall properties and interaction in double-layer films is reported. An apparent preference for the formation of Neel type walls has been observed in the double layer films. Experimental evidence is given and energy calculations are presented for configurations of Bloch wall and Neel wall interactions with a neighboring film. The lowering of wall energies and a transition to wall structures of the Neel type are verified in terms of the magnetostatic interaction between a wall in one film and the magnetic material of a superimposed layer.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 31, 1964
- Accession Number
- AD0634539
Entities
People
- H. I. Jauvtis
- Harrison W. Fuller
- R. Hornreich
- R. J. Spain