Magneto optic recording medium with silicon carbide dielectric

Details Magneto optic recording medium with silicon carbide dielectric Magneto optic recording medium with silicon carbide dielectric

1988-02-01

1990-04-17

Thibodeau, Paul J.

Stock material or miscellaneous articles

Composite

Of inorganic material

365122, 369 13, 428900, G11B 564

Patent

active

049179705

ABSTRACT:
A magneto optic recording medium comprising a substrate, an amorphous magnetizable rare earth-transition metal alloy layer, a transparent dielectric layer on at least one side of the magnetizable layer, and a reflective surface located to reflect light through the magnetizable alloy layer. The dielectric layer is comprised of silicon carbide of the formula SiC.sub.x, wherein x, the molar ratio of carbon to silicon, is greater than 1. The dielectric layer is preferably deposited by direct current magnetron sputtering at low argon partial pressure from an electrically conductive mixture of silicon carbide and carbon. The medium exhibits similar or improved characteristics over media constructed with present dielectrics, for example, silicon suboxide (SiO.sub.y, y<2).

REFERENCES:
patent: 3594064 (1971-07-01), Bierlein
patent: 4414650 (1983-11-01), Ohta et al.
patent: 4569881 (1986-02-01), Freese et al.
patent: 4615944 (1986-10-01), Gardner
patent: 4661420 (1987-04-01), Nakamura et al.
patent: 4670316 (1987-06-01), Kryder
patent: 4777068 (1988-10-01), Omata et al.
Mogab, C. et al., "Preparation and Properties of Noncrystalline Silicone Carbide Films," Journal of Applied Physics, vol. 39, No. 8, pp. 3640-3645 (Jul. 1968).
Matsunami, H. et al., "Structures and Physical Properties of Sputtered Amorphous SiC Films," Journal of Electronic Materials, vol. 8, No. 3, pp. 249-260 (1979).
Tohda, T. et al., "Effects of Target Materials on the Structural Properties of Sputtered SiC Films," Journal of Electrochemical Society: Electrochemical Science and Technology, vol. 127, No. 1, pp. 44-47 (Jan. 1980).
Nagai, T. et al., "Effects of Nitrogen on the Electrical Properties of Sputtered SiC.sub.x Films," Thin Solid Films, vol. 106, pp. 303-309 (1983).
Arimune, H. et al., "Environmental Stability of the Magneto-Optic Medium," IEEE Translation Journal on Magnetics in Japan, vol. TJMJ-1, No. 3, pp. 337 and 338 (Jun. 1985).
Nakamura, K. et al., "Enhancement of Kerr Rotation with Amorphous Si Film," IEEE Transactions on Magnetics, vol. MAG-21, No. 5, pp. 1654-1656 (Sep. 1985).

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