Amorphous magneto optical recording medium

Details Amorphous magneto optical recording medium Amorphous magneto optical recording medium

G - Physics

11

B

352/20.3, 352/33

G11B 5/62 (2006.01) G11B 5/64 (2006.01) G11B 5/72 (2006.01) G11B 5/85 (2006.01) G11B 5/851 (2006.01) G11B 11/105 (2006.01) H01F 10/13 (2006.01)

Patent

CA 1217859

AMORPHOUS MAGNETO OPTICAL RECORDING MEDIUM Abstract of the Disclosure A magneto optical thin film recording medium is disclosed having very high carrier-to-noise ratios and high rotation angles. A transmission electron microscope photomicrograph (at 200,000 X) of one such medium is shown in Figure 1. These are multi-phase amorphous materials having magnetic anisotropy perpendicular to the plane of the thin film. They are produced in a triode vacuum sputtering process at vacuums in the range of 4 x 10-3 to 6 x 10-4 Torr. By adjusting process parameters such as substrate temperature, anode bias and deposition rate, the properties of the thin film can be altered.

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