Photo-inducible magnetic exchange coupling device

Details Photo-inducible magnetic exchange coupling device Photo-inducible magnetic exchange coupling device

1995-02-23

1998-03-03

Snow, Walter E.

Electricity: measuring and testing

Magnetic

With means to create magnetic field to test material

324226, G01R 3312, H01L 4308

Patent

active

057239789

ABSTRACT:
A magnetic device, comprises a first magnetic layer; a second magnetic layer on the magnetic layer and having a coercive force smaller than that of the first magnetic layer; a semiconductor layer between the first and second magnetic layers so that photo-induced magnetism occurs between the first and second magnetic layers when the semiconductor layer is irradiated with light, a third magnetic layer on the second magnetic layer, the third magnetic layer having a coercive force larger than the coercive force of the second magnetic layer, and a second semiconductor layer between the second and third magnetic layers, magnetism being induced between the second and third magnetic layers when the second semiconductor layer is irradiated with light.

REFERENCES:
patent: 4871614 (1989-10-01), Kobayashi
Inomata, et al., "Giant Magnetoresistance and Low Saturation Fields in Co-Fe/Cu Multilayers," Journal of Magnetism & Magnetic Materials, vol. 126 (1993).
"Light Induced Magnetic Exchange-Coupling", B. Briner et al., Z. Phys. B92, pp. 137-139, (1993).
"Photoinduced Antiferromagnetic Interlayer Coupling in Fe/(Fe-Si) Superlattices", J.E. Mattson et al., Physical Review Letters, 71 (1):185-188 (1993).

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