Thermo-magneto-optical memory device and recording medium theref

Details Thermo-magneto-optical memory device and recording medium theref Thermo-magneto-optical memory device and recording medium theref

1985-09-25

1986-04-29

Richardson, Robert L.

Dynamic magnetic information storage or retrieval

General recording or reproducing

Thermomagnetic recording or transducers

360114, 369 13, 365122, G11B 1100

Patent

active

045860920

ABSTRACT:
A thermomagnetooptical memory device comprises a recording medium having a substrate on which there is a magnetooptically active layer. The magnetooptically active layer is present between a laser source and a layer reflecting radiation from the laser source. The device further includes lenses to focus radiation from the laser source onto selected locations on the recording medium, and magnetooptical detectors placed in the path of the radiation returning from the magnetooptically active layer. The magnetooptically active layer comprises a polycrystalline, oxidic material based on Fe.sup.3+ having a spinel structure and having a thickness chosen to cause destructive interference between the plane polarized radiation returning from the surface of the magnetooptic layer and plane polarized radiation returning from the reflecting layer and having passed through the magnetooptically active layer at least twice.

REFERENCES:
patent: 3174140 (1965-03-01), Hagopian et al.
patent: 3224333 (1965-12-01), Kolk et al.
patent: 3472575 (1969-10-01), Hunt
patent: 3626394 (1971-12-01), Nelson et al.
patent: 3636535 (1972-01-01), Cushner et al.
patent: 3648257 (1972-03-01), Wiese, Jr. et al.
patent: 3683405 (1972-08-01), Duck
patent: 3778791 (1973-12-01), Lewicki et al.
patent: 3838450 (1974-09-01), Bongers et al.
patent: 3838907 (1974-10-01), Enz
patent: 3928870 (1975-12-01), Ahren Kiel et al.
patent: 4466035 (1984-08-01), Connell et al.
patent: 4473829 (1984-09-01), Schouhamer et al.

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