Bubble memory bias field structure

Details Bubble memory bias field structure Bubble memory bias field structure

1980-11-06

1987-09-08

Moffitt, James W.

Static information storage and retrieval

Magnetic bubbles

Bias

365 2, G11C 1908

Patent

active

046928987

ABSTRACT:
A bias magnet for a bubble memory device is comprised of a single material low permeability magnet contoured to enhance the magnetic field in the central area of the magnet and is adapted to be slightly larger than the bubble memory chip and in thermal contact therewith, the entire bubble memory chip and bias magnet structure to be surrounded by the rotating magnetic field drive coil structure.

REFERENCES:
patent: 3864671 (1975-02-01), Myer
patent: 4530072 (1985-07-01), Jallen
IBM Technical Disclosure Bulletin--vol. 15, No. 5, Oct. 1972, p. 1602.
IBM Technical Disclosure Bulletin--vol. 13, No. 11, Apr. 1971, p. 3219.
IEEE Transactions on Magnetics--vol. Mag-12, No. 6, Nov. 1976, pp. 645-647.

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