Bloch line memory device and method for operating same

Details Bloch line memory device and method for operating same Bloch line memory device and method for operating same

1987-02-19

1991-09-17

Moffitt, James W.

Static information storage and retrieval

Magnetic bubbles

Strip domain

365 87, G11C 1908

Patent

active

050501224

ABSTRACT:
There are disclosed techniques concerning reading out Bloch lines in a Bloch line memory device, where pairs of Bloch lines are used as an information carrier. The pairs of Bloch lines are transferred to the head portion of a stripe magnetic domain and an inplane magnetic field is applied at the proximity of the head portion of the stripe magnetic domain so that the pairs of Bloch lines are split. In this way only one of the Bloch lines can exist stably at the head portion of the stripe magnetic domain. Then the Bloch lines are transformed into a magnetic bubble domain by making electric current to flow through a hair-pin shaped conductor disposed at the proximity of the head portion of the stripe magnetic domain. This magnetic bubble domain is detected by a magnetic bubble detector.

REFERENCES:
patent: 4001794 (1977-01-01), Voeyeli
patent: 4583200 (1986-04-01), Konishi et al.
IEEE Transactions on Magnetics, vol. Mag.-21, No. 5, Sep. 1985, pp. 1762-1766.
IEEE Trans. on Magnetics, Mag. 19, No. 5 Sep. (1983) pp. 1838-1840; pp. 1841-1843.
Electronic Product Design Oct. 1985, pp. 69-72.

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