Laminated magnetic bubble device

Static information storage and retrieval – Magnetic bubbles – Multiple magnetic layer

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365 29, 365 36, 365 41, G11C 1908

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active

045162220

ABSTRACT:
Herein disclosed is a laminated magnetic bubble device of a multiple layer structure composed of at least one thin magnetic film having low coercive force and vertically oriented anisotropy which can allow easy generation and erasure of a magnetic bubble, and at least one thin magnetic film having high coercive force and vertically oriented anisotropy which will not be affected by a magnetic field of low level used for generating the magnetic bubble in the thin film of low coercive force.

REFERENCES:
patent: 4070658 (1978-01-01), Giess et al.
patent: 4095279 (1978-06-01), Lins
patent: 4122538 (1978-10-01), Lins
"Multilayer Epitaxial Garnet Films for Magnetic Bubble Devices-Hard Bubble Suppression", A. H. Bobeck et al, The Bell System Technical Journal, vol. 51, No. 6, Jul.-Aug., 1972.
"Internal Bias Effect of Double Layer Epitaxial Garnet Films", Uchishiba et al, IEEE Transactions on Magnetics, vol. MAG-9, No. 3, Sep., 1973.
"Wall State Stability of Bubbles in Uniaxial Double-Layer LPE Films", Menz et al, IEEE Transactions on Magnetics, vol. MAG-14, No. 5, Sep., 1978.
"Dynamic Behavior of Domain Walls in Double Layer Self-Biasing Bubble Garnet Films", Zebrowski et al, IEEE Transactions on Magnetics, vol. MAG-15, No. 6, Nov., 1979.

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