Magnetic domain device shield

Details Magnetic domain device shield Magnetic domain device shield

1978-06-16

1980-06-24

Moffitt, James W.

Static information storage and retrieval

Magnetic bubbles

Disposition of elements

365 53, G11C 1908, G11C 504

Patent

active

042098483

ABSTRACT:
Field accessed magnetic domain device apparatus, of the kind which employs an inner and an encompassing outer solenoid as the rotational magnetic field orthogonal drive coil members with the magnetic domain device(s) mounted within the inner solenoid, has conductive shield means disposed within the inner solenoid between the device(s) and the solenoids. This results in a substantially uniform flux distribution which passes through the inner solenoid and/or mitigation of the adverse effects of the stray flux between turns of the solenoids. As a consequence, a substantially uniform rotational magnetic field distribution is provided in the active area for the device(s), generally referred to as magnetic bubble device(s) or chip(s).

REFERENCES:
patent: 4096581 (1978-06-01), Carlo et al.
patent: 4101970 (1978-07-01), Saitoet al.
IEEE Transactions on Magnetics-vol. Mag-9, No. 3, Sep. 1973, pp. 429-433.
IBM Technical Disclosure Bulletin-vol. 20, No. 8, Jan. 1978, pp. 3054-3055.

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