Method of transferring Bloch lines in the domain wall of a magne

Details Method of transferring Bloch lines in the domain wall of a magne Method of transferring Bloch lines in the domain wall of a magne

1987-07-28

1990-11-27

Moffitt, James W.

Static information storage and retrieval

Magnetic bubbles

Strip domain

365 36, 365 37, 365 38, 365 42, G11C 1908

Patent

active

049742000

ABSTRACT:
A method of transferring Bloch lines present in a domain wall of a magnetic domain formed in a thin magnetic firm, includes cyclically forming asymmetrical potential wells along the domain wall in order to locate the Bloch lines at predetermined positions of the domain wall, and applying a pulsed magnetic film to shift the Bloch lines from a predetermined potential well to another potential well. In a magnetic memory for recording information using Bloch lines as an information carrier, a memory substrate has a stripe magnetic domain defined by a domain wall along which asymmetrical potential wells are cyclically formed to stabilize the Bloch lines along the domain wall. The Bloch lines are written in the domain wall in accordance with input information, the Bloch lines so formed are read out, and the read-out Bloch lines are converted into an electrical signal. A pulsed magnetic field is applied in a direction perpendicular to a surface of the memory substrate for shifting the Bloch lines between potential wells.

REFERENCES:
patent: 3540019 (1970-11-01), Bobeck et al.
patent: 4253161 (1981-02-01), Paul et al.
patent: 4343038 (1982-08-01), Enz
patent: 4583200 (1986-04-01), Konishi et al.
patent: 4589094 (1986-05-01), Takeuchi et al.
IEEE Transaction on Magnetics, Sep. 1972, pp. 405-407.

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