Ferrimagnetic oxides and magneto-optical recording medium employ

Details Ferrimagnetic oxides and magneto-optical recording medium employ Ferrimagnetic oxides and magneto-optical recording medium employ

1984-03-30

1985-12-31

Lesmes, George F.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including variation in thickness

428172, 428215, 428332, 428457, 428694, 428702, 428900, 365122, 360135, G11B 900

Patent

active

045621055

ABSTRACT:
Ferrimagnetic oxides of the following formula, ##EQU1## wherein Me represents at least one element selected from the group consisting of Ba, Sr and Pb, M.sub.I is at least one element selected from the group consisting of Ga and Al, M.sub.II is at least one element selected from the group consisting of Bi, Gd, Tb, Dy, Ho, La, Y, Co, Zn, Ti, Sc, In, Sn, Ca, Cr, Ni and Ge, 1.ltoreq.x.ltoreq.8, 0<y.ltoreq.6, 1.ltoreq.x+y.ltoreq.8, m is an ion valence of M.sub.I and n is an ion valence of M.sub.II, and a magneto-optical recording medium comprising a transparent substrate, a perpendicular magnetic-anisotropic magnetic film layer formed on the substrate, which magnetic film layer comprises one of the ferrimagnetic oxides of the above formula, and a reflection layer formed on the magnetic film layer, are disclosed.

REFERENCES:
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patent: 4414650 (1983-11-01), Ohta et al.
patent: 4425250 (1984-01-01), Hibst
patent: 4450201 (1984-05-01), Brill et al.
patent: 4493779 (1985-01-01), Kamiyama
Mat. Res. Bull., vol. 16, No. 12, (Dec.), pp. 1499-1504, (1981), Pergamon Press Ltd.

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