Preparation Studies of Calcium Sulfide Films for Optical Data Storage

R. Carey; D. M. Newman; I. Viney; J. Wu; J. Bickerton

doi:10.3379/jmsjmag.25.248

Recording Material and Physics I

Preparation Studies of Calcium Sulfide Films for Optical Data Storage

R. Carey, D. M. Newman, I. Viney, J. Wu, J. Bickerton

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Keywords: electron trapping optical memory, non-thermal recording mechanisms, CaS optical films

JOURNAL OPEN ACCESS

2001 Volume 25 Issue 3_2 Pages 248-251

DOI https://doi.org/10.3379/jmsjmag.25.248

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Abstract

The preparation of CaS films by magnetron sputtering with the requisite properties for optical recording is studied. Sputtering targets are produced from pressed powders permitting rapid investigation of the optimum dopant concentration of the rare earth ions Eu and Sm. The problem of negative ion re-sputtering is addressed but low sputtering rates remain a problem.

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