Physical basis of magneto-optic recording

Dieter Mergel; Peter Hansen; Detlef Raasch

doi:10.1117/12.137548

13 August 1992 Physical basis of magneto-optic recording

Dieter Mergel, Peter Hansen, Detlef Raasch

Proceedings Volume 1663, Optical Data Storage; (1992) https://doi.org/10.1117/12.137548
Event: Optical Data Storage Topical Meeting, 1992, San Jose, CA, United States

Abstract

The material classes currently used or discussed as magneto-optic (MO) media, namely rare- earth transition-metal (RE-TM) alloys, Pt/Co multilayers (ML) and garnets are reviewed with emphasis on those properties which limit their use for MO recording. A comparison between RE-TM and Pt/Co with respect to thermal sensitivity and recording with shorter wavelengths is performed. We conclude that RE-TM based disks are the more sensitive medium and are also good candidates for `blue' recording due to their fine microstructure. We then discuss the energy balance for the stability of domains in exchange-coupled layers, media and stack designs to obtain stable domains, and the role of interface wall motion in the domain formation in such layers.

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Dieter Mergel, Peter Hansen, and Detlef Raasch "Physical basis of magneto-optic recording", Proc. SPIE 1663, Optical Data Storage, (13 August 1992); https://doi.org/10.1117/12.137548

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