Magnetic domain storage device

Details Magnetic domain storage device Magnetic domain storage device

1978-03-16

1980-05-27

Moffitt, James W.

Static information storage and retrieval

Systems using particular element

Cells of diverse coercivity

365 87, G11C 1908

Patent

active

042053935

ABSTRACT:
A magnetic domain storage device comprising a ferromagnetic, polycrystalline metal layer which is applied to a support and comprises areas of different coercivity, the areas of lower coercivity in the form of strip-shaped channels being surrounded by areas of higher coercivity; a system of electrical conductors, extending in planes arranged parallel and in close vicinity to the ferromagnetic layer for creating, propagating and detecting magnetic domains in the channels of lower coercivity; and a baseplate with electrical connections. The areas of lower coercivity follow a path similar to a spiral with its one end adjacent to the center of the support and the other end adjacent to a corner of the support and executing at least one full 360.degree. turn between both ends. The domain storage devices of this type are distinguished by a higher storage capacity.

REFERENCES:
patent: 3438016 (1969-04-01), Spain
IEEE Transactions on Magnetics--Sept. 1972, pp. 405-407.

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