Technologies of magneto-optical information recording in thin films of rare-earth magnetically soft alloys

Part I. Thermo-optical information recording
Piskorsky V.P., Valeev R.A., Korolev D.V., Stolyankov Yu.V., Morgunov R.B.
UDC
004.083004.083
DOI
10.18577/2307-6046-2020-0-1-24-37
Article PDF (Russian) (1.15 MB)
How to cite
Piskorsky V.P., Valeev R.A., Korolev D.V., Stolyankov Yu.V., Morgunov R.B. Technologies of magneto-optical information recording in thin films of rare-earth magnetically soft alloys. Part I. Thermo-optical information recording // Proceedings of VIAM. 2020. No. 1. DOI: 10.18577/2307-6046-2020-0-1-24-37. URL: https://test.viam.ru/en/journal/2020/1/3
Keywords
magnetic anisotropy, rare-earth magnets, thin films, magnetic hysteresis.
Abstract

A review of the basics of modern thermo-magnetic and spin-polarization laser magneto-optical information recording technologies is presented. Alloys based on rare-earth (RE) and transition (TM) metals, due to the high degree of homogeneity of their magnetic and optical properties, have found practical application in superdense magneto-optical recordings. Discusses the principles and mechanism of magneto-optical recording and storage of information in thin RE–TM films. The magneto-optical characteristics for polycrystalline and amorphous alloys are compared depending on the film thickness, composition, and other structural parameters. The advantages of Gd–Fe–Co alloys for use in ultrafast optical magnetization reversal storage devices are formulated.

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