Thermomagnetic recording on amorphous ferrimagnetic films

K. S. Aleksandrov; G. P. Berman; G. I. Frolov; V. A. Seredkin

doi:10.1117/12.50414

1 November 1991 Thermomagnetic recording on amorphous ferrimagnetic films

K. S. Aleksandrov, G. P. Berman, G. I. Frolov, V. A. Seredkin

Proceedings Volume 1621, Optical Memory and Neural Networks; (1991) https://doi.org/10.1117/12.50414
Event: Optical Memory and Neural Networks, 1991, Zvenigorod, Russian Federation

Abstract

The influence of duration of laser radiation impulses on the mechanisms of thermomagnetic recording on thin amorphous films of alloys with perpendicular anisotropy is considered. Examples of these alloys are TbFe, DyFe, TbCo, and DyCo, which currently are under investigation for recording applications. For duration of impulses (tau) >= 10-7s the process of stable domain structures formation is considered under the inhomogeneous heating in the presence of weak external magnetic field. For (tau) -8s it is shown that at a slight heating of the exposed area large pressures are developed in the film. Optical recording with higher energy sensitivity than in the thermomagnetic method is realized in these films.

Citation Download Citation

K. S. Aleksandrov, G. P. Berman, G. I. Frolov, and V. A. Seredkin "Thermomagnetic recording on amorphous ferrimagnetic films", Proc. SPIE 1621, Optical Memory and Neural Networks, (1 November 1991); https://doi.org/10.1117/12.50414

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