Scanning magnetic head with propagating domain wall

Details Scanning magnetic head with propagating domain wall Scanning magnetic head with propagating domain wall

1981-08-03

1983-11-08

Stellar, George G.

Dynamic magnetic information storage or retrieval

Head

Flux scanning

G11B 512

Patent

active

044145950

ABSTRACT:
A magnetic head has an array of cores the transducer gaps of which are aligned in a row. Each core--unlike most prior art cores--has a high reluctance back gap; and bridging the back gap of all such cores is a common magnetic wire. Pursuant to the invention, a domain wall is created in the film on the magnetic wire; and such domain wall is thereafter caused to propagate along the length of the wire. Whenever the domain wall resides in the back gap of a given core in the array of cores, that back gap has low reluctance, thereby turning ON the core in question. All other cores remain OFF until the propagating domain wall resides at their respective back gaps.

REFERENCES:
patent: 2921989 (1960-01-01), Serrell
patent: 3140471 (1964-07-01), Fuller

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