Magnetic device operating with the photomagnetic effect

Details Magnetic device operating with the photomagnetic effect Magnetic device operating with the photomagnetic effect

1975-10-17

1977-04-26

Habecker, Thomas B.

Communications: electrical

Digital comparator systems

336 30, 336DIG3, G11C 1102

Patent

active

040204758

ABSTRACT:
A magnetic device which can be driven by means of electromagnetic radiation and has a radiation-sensitive element consisting of cobalt-doped yttrium-iron garnet. Exposure to electromagnetic radiation produces a decrease of the magnetic permeability of the element which decrease is permanent until the element is demagnetized and occurs at temperatures from 77.degree. K to room temperature.

REFERENCES:
patent: 3447851 (1969-06-01), Remeika
patent: 3460116 (1969-08-01), Bobeck
patent: 3566383 (1971-02-01), Smith
patent: 3859643 (1975-01-01), Borrelli
Magnetic Bubbles, A. H. Bobeck and H. E. D. Scovil, Scientific American, June 1971, pp. 78-90.

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