Gapless magnetic bubble propagation circuit

Details Gapless magnetic bubble propagation circuit Gapless magnetic bubble propagation circuit

1976-11-01

1978-06-06

Moffitt, James W.

Static information storage and retrieval

Magnetic bubbles

Guide structure

G11C 1908

Patent

active

040940063

ABSTRACT:
A magnetic bubble propagation device comprising a pattern of magnetic material formed of the so-called gap tolerant elements, positioned over a bubble supporting material to define a bubble propagation path. Each element of the pattern is spaced from the bubble material such that a gradient is formed in the spacing between the element and the bubble material in the direction of the propagation path. A rotating magnetic field of sufficient strength to magnetize the pattern is applied in the plane of the material and the spacing gradient causes the bubble to move from one element to an adjacent element in one complete field rotation. This device is particularly characterized in that, with the combination of the pattern elements and the spacing gradient thereof, the gaps between the elements are eliminated.

REFERENCES:
patent: 3875568 (1975-04-01), Bailey
patent: 3927398 (1975-12-01), Dimyan
patent: 3971037 (1976-07-01), Enoch
Proceedings of the IEEE -- Dec. 1973, pp. 1761-1762.

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