ZnS dielectric thin film and magnetic recording medium

Details ZnS dielectric thin film and magnetic recording medium ZnS dielectric thin film and magnetic recording medium

1994-08-26

1997-06-03

Thibodeau, Paul J.

Stock material or miscellaneous articles

Composite

Of inorganic material

1062866, 1062873, 10628732, 428694ST, 428694T, 428694TP, 428694ML, 428900, C09D 100, G11B 566, G11B 570

Patent

active

056353103

ABSTRACT:
A zinc sulfide thin film containing oxygen or oxygen and nitrogen has a high refractive index, a high transmittance, and a high Kerr rotation angle enhancing performance. The zinc sulfide thin film is manufactured by sputtering a zinc sulfide sintered product containing oxygen in an argon gas atmosphere or a gas mixture atmosphere of argon gas and nitrogen gas.

REFERENCES:
patent: 4680742 (1987-07-01), Yamada et al.
patent: 4847132 (1989-07-01), Takao et al.
patent: 4861671 (1989-08-01), Muchnik et al.
Kunio Ichiji and Toshio Kudo, "Optical Properties of ZnS Films Prepared by RF Sputtering in Ar +N.sub.2 Mixed Gases," Shinkuh (Vacuum), vol. 33, No. 3 (1990), 191-193 (103-105).
T. Kudo, H. Johbetto and K. Ichiji, "Effect of Nitrogen Upon Enhancement of the Magnetic Kerr Rotation in ZnS(O,N)/TbFeCo Bilayer Films," J. Appl. Phys., 67 (9), May 1, 1990, 4778-4780.
R. Allen and G.A.N. Connell, "Magneto-Optic Properties of Amorphous Terbium-Iron," J. Appl. Phys., 53 (3) Mar. 1982, 2353-2355.
B.R. Critchley and P.R.C. Stevens, "Composition of RF-Sputtered ZnS Films," J. Phys. Appl. Phys., vol. 11, 1978, 491-498.
Fujio Tanaka, Yasuyuki Nagao and Nobutake Imamura, "Dynamic Read/Write Characteristics of Magneto-Optical TbFeCo and DyFeCo Disk," IEEE Transactions on Magnetics, vol. MAG-20, No. 5, Sep. 1984, 1033-1035.

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