Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1975-05-12
1977-02-01
Lesmes, George F.
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
340174TF, 428457, 428539, 428900, G11C 1114, G11C 1900
Patent
active
040062767
ABSTRACT:
A magnetic bubble domain composite comprising an overlay of highly permeable magnetic material, such as permalloy, is provided for bubble domain material to shunt the magnetic field formed by bubble domains therein into a path that is substantially within the overlay. The overlay shunt reduces the substantial polarization that bubble domains can effect on the poles of field access propagation elements. By reducing the polarization, the shunt avoids drastic increases in the in-plane drive field that would otherwise be necessary to couple bubble domains formed in high magnetization materials to the poles of magnetic propagation elements. For the exemplary permalloy shunt, a typical thickness of approximately 500-1000 A provides adequate shunting of high magnetization materials, such as GdCo alloys or rare earth garnet alloys, that are capable of supporting small, typically submicron, bubble domains.
REFERENCES:
IBM Tech. Dis. Bull., Keefe et al., vol. 13, No. 11, Apr. 1971, p. 3295.
IBM Tech. Dis. Bul., Geiss et al., vol. 16, No. 5, Oct. 1973, p. 1461.
IBM Tech. Dis. Bull., Keefe et al., vol. 14, No. 9, Feb. 1972, p. 2565.
IBM Tech. Dis. Bull., Almasi et al., vol. 14, No. 9, Feb. 1972, p. 2562.
IBM Tech. Dis. Bull., Ahn et al., vol. 14, No. 6, Nov. 1971, p. 1850.
IBM J. Res. Develop., Chaudari et al., Jan. 1973, pp. 66-68.
Hamann H. Fredrick
Lesmes George F.
Rockwell International Corporation
Silverman Stanley S.
Weber Jr. G. Donald
LandOfFree
Magnetic bubble domain field shunt does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Magnetic bubble domain field shunt, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic bubble domain field shunt will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1092133