1980-12-18
1983-08-16
Arnold, Bruce Y.
350375, G02B 518, G02F 122
Patent
active
043987982
ABSTRACT:
Disclosed is an apparatus for and a method of establishing the domain walls within a stripe-domain supporting magnetizable film in a radially directed orientation, the separation of which is proportional to the distance from the center of the diffraction grating. The apparatus includes means for coupling to the stripe-domain supporting magnetizable film an orienting field that is directed orthogonal to the plane of the film but whose intensity from the center of the field source is inversely proportional to the distance from the center of the field source and further including means for coupling to said film an AC tickle field of significant to decreasing to zero amplitude for overcoming the hysteresis of the film.
REFERENCES:
patent: 3752563 (1973-08-01), Torok et al.
Krawczak John A.
Torok Ernest J.
Arnold Bruce Y.
Grace Kenneth T.
Propp William
Sperry Corporation
Truex Marshall M.
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