Magneto-optical layer and magneto-optical recording medium

Details Magneto-optical layer and magneto-optical recording medium Magneto-optical layer and magneto-optical recording medium

1994-08-04

1997-05-06

Kiliman, Leszek

Stock material or miscellaneous articles

Composite

Of inorganic material

428 94SC, 428694T, 428694MT, 428694RE, 428900, 420433, 420435, 420462, 420466, 148313, 148425, G11B 566

Patent

active

056269730

ABSTRACT:
A magneto-optical layer sensitive to a light with a short wavelength such as 400 to 550 nm and having a perpendicular magnetization can be deposited on a substrate at a room temperature. The magneto-optical layer is of a tertiary polycrystalline having a composition, for example, Co.sub. aPt.sub.b Ru.sub.c where 20.ltoreq.a.ltoreq.70, 10.ltoreq.b.ltoreq.70, 10.ltoreq.c.ltoreq.60 and a+b+c=100 or Co.sub.d Pt.sub.e Re.sub.f where d.ltoreq.80, 5.ltoreq.e, 5.ltoreq.f, 40.ltoreq.4d-5f and d+e+f=100, and has an easy magnetization axis perpendicular to the main surface of the layer.

REFERENCES:
patent: 3755796 (1973-08-01), Griest, Jr.
patent: 4438066 (1984-03-01), Aboaf et al.
patent: 4995923 (1991-02-01), Mizumoto et al.
C.J. Lin et al, "Evaporated CoPt alloy films with strong pependicular magnetic anisotropy", Applied Phys. Lett. 61(13).
K.H.J. Buschow et al, "Magneto-Optical Properties of Metallic Ferromagnetic Materials", Journal of Magnetism and Magnetic Materials, 38 (1983).
Applied Physics Letters, vol. 61, No. 13, 1992, pp. 1600-1602, C.J. Lin et al, "Evaporated CoPt alloy films with strong perpendicular magnetic anistropy".
IBM Technical Disclosure Bulletin, vol. 34, No. 78, Dec. 1991, pp. 6-7, "Large perpendicular magnetic anisotropy in Co/Ru multi-layered structures".
Patent Abstracts of Japan, vol. 16, No. 505, Oct. 19, 1992.

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