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Proceedings Paper

Physical basis of magneto-optic recording
Author(s): Dieter Mergel; Peter Hansen; Detlef Raasch
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Paper 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.

Paper Details

Date Published: 13 August 1992
PDF: 10 pages
Proc. SPIE 1663, Optical Data Storage, (13 August 1992); doi: 10.1117/12.137548
Show Author Affiliations
Dieter Mergel, Philips Research Aachen (Germany)
Peter Hansen, Philips Research Aachen (Germany)
Detlef Raasch, Philips Research Aachen (Germany)

Published in SPIE Proceedings Vol. 1663:
Optical Data Storage
Donald B. Carlin; David B. Kay; Alfred A. Franken, Editor(s)

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