Unique system of FE/PD for magneto-optical recording and magneti

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428676, 428900, 427128, 427295, 369 13, G11B 570

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051166933

ABSTRACT:
A high density magneto-optical information storage medium utilizing the properties of an ultrathin iron film on a palladium substrate. The present invention comprises a magneto-optical medium capable of thermal and magnetic stability and capable of possessing a vertical orientation of the magnetization vector for the magnetic material. Data storage relies on the temperature dependence of the coercivity of the ultrathin film. Data retrieval derives from the Kerr effect which describes the direction of rotation of a plane of polarized light traversing the ultrathin magnetic material as a function of the orientation of the magnetization vector.

REFERENCES:
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Tian, D. et al. "Epitoxy of Mn on Pd (001)," Solid State Comm., vol. 70 pp. 199-204 (1989).
Binns et al. "Magnetic Behavior of Ultra-Thin Iron Overlayers on Palladium (111)"; Solid State Comm. vol. 43 (1982) pp. 853-855.
Koon, N. C. et al. "Direct Evidence for Perpendicular Spin Orientations and Enhanced Hyperfine Fields in Ultrathin Fe(100) Films on Ag(100)", Physical Rev. Lett vol. 59 (1987) pp. 2463-2466.
Dutcher et al. "Magnetic properties of sandwiches and superlattices of fcc Fe (001) grown on Co (001) substrates", J. Appl. Phys. vol. 63 (Apr. 15, 1988), pp. 3464-3466.
van Acker et al., "Electronic structure of Fe, Co, and N. Impurities in Pd," Physical Review B, vol. 38 (Nov. 15, 1988), pp. 10463-10467.
Magneto-Otical Studies of Metastable 3d-Transition Metal Films, C. Liu and S. D. Bader, Physics B 161 (1989) pp. 253-259.
Two-Dimensional Magnetic Phase Transition of Ultrathin Iron Films on PD(100), C. Liu and S. D. Bader, Journal of Applied Physics 67 (9), May 1, 1990 pp. 5758-5760.
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Surface Magneto-Optical Studies of Ultrathin Ferromagnetic Films, C. Liu and S. D. Bader Second International Workshop on the Magnetic Properties of Low-Dimensional Systems, May 26-26 1989.
Magnetic Properties of Novel Epitaxial Films, S. D. Bader et al., J. App. Phys. 61 (8), Apr. 15, 1987.
Magnetism of Epitaxial fcc Iron Films on Cu(001) Investigated by Spin-Polarized Photoelectric Emission, D. Pescia et al.
Phy. Rev. Lett. 58, 2126, May 18, 1987.
Polar Kerr-Effect Observation of Perpendicular Surface Anisotropy for Ultra-Thin fcc Fe Grown on Cu(100), C. Liu et al.
Phys. Rev. Lett 60, 2422, Jun. 6, 1988.

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