Magnetic memory device using a deflected in-plane magnetic field

Details Magnetic memory device using a deflected in-plane magnetic field Magnetic memory device using a deflected in-plane magnetic field

1989-08-11

1990-05-15

Moffitt, James W.

Static information storage and retrieval

Magnetic bubbles

Strip domain

365 27, 365 87, G11C 1908

Patent

active

049263773

ABSTRACT:
In a magnetic memory device for use in selectively carrying out a write-in operation and a readout operation of a pair of vertical Bloch lines as an information carrier in a domain wall of a stripe domain extended along a longitudinal direction, a deflected in-plane magnetic field is applied to an end portion of the stripe domain and deflected relative to the longitudinal direction at an angle within an angle range by the use of a pair of magnetic units. The deflected in-plane magnetic field serves to stably hold a single Bloch line to a predetermined flank wall of the stripe domain during the write-in operation or to stably separate three Bloch lines from one another during the readout operation. Such application of the deflected in-plane magnetic field also serves to smoothly propagate each Bloch line.

REFERENCES:
patent: 4001794 (1977-01-01), Voegeli
patent: 4583200 (1986-04-01), Konishi et al.
patent: 4731752 (1988-03-01), Hidaka
patent: 4845671 (1989-07-01), Maruyama et al.

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