Closed loop propagation pattern for bubble lattices

Details Closed loop propagation pattern for bubble lattices Closed loop propagation pattern for bubble lattices

1978-06-21

1979-10-23

Moffitt, James W.

Static information storage and retrieval

Magnetic bubbles

Disposition of elements

365 14, 365 35, 365 43, G11C 1908

Patent

active

041722906

ABSTRACT:
A bubble storage system includes a closed loop propagation pattern suitable for use with a bubble lattice. The closed loop propagation pattern is folded and contains, for example, segments of a hexagonal lattice connected by 60.degree. turns to obtain a close pack bubble storage configuration. The bubbles are propagated along the pattern consisting, preferably, of C-bar or chevron type permalloy elements by a rotating magnetic field in the plane of the pattern. In a preferred embodiment, the folded closed loop propagation pattern is surrounded by a region of non-propagating bubbles retained by permalloy dot confinement means. There are substantially the same number of elements in the propagation pattern as there are bubbles in the lattice that are affected by the propagation elements.

REFERENCES:
patent: 3806901 (1974-04-01), Buhrer
patent: 3953841 (1976-04-01), Voegeli
patent: 4067002 (1978-01-01), Chang

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