Journal ArticleDOI
Crystallization process of Sb‐Te alloy films for optical storage
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TLDR
Sb2Te3 is shown to be the best practical phase change medium, having room-temperature stability in amorphous states, short erasing times, and potentially good reversibility.Abstract:
Sb‐Te alloy films are developed as rewritable optical recording materials based on amorphous crystalline phase transformations. The crystallization process of Sb‐Te sputtered films is systematically studied through measurement of recording characteristics to solve the trade‐off problem between data (amorphous) stability and erasing sensitivity. Sb2Te3 is shown to be the best practical phase change medium, having room‐temperature stability in amorphous states, short erasing times, and potentially good reversibility. The carrier‐to‐noise ratio of 50 dB in writing and a decrease in the carrier level of over 30 dB in erasing are achieved in dynamic measurement with a single beam optical head. These favorable properties are attributable to the wide composition margin for a single phase formation in the Sb‐Te alloy system.read more
Citations
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Susceptibility to periodic breathing with assisted ventilation during sleep in normal subjects
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Instability of Ventilatory Control in Patients with Obstructive Sleep Apnea
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Influence of chemoreflexes on respiratory variability in healthy subjects.
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References
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Journal ArticleDOI
Reversibility and stability of tellurium alloys for optical data storage applications
TL;DR: In this article, the authors demonstrate that Te87Ge8Sn5 films can be optically switched between the crystalline and amorphous states more than 106 times, and that the measured reflectivity changed from 40% to 60% and the transmission changed from 3% to 1.5%, respectively, between the ammorphous and crystalline states.
Journal ArticleDOI
New phase change material for optical recording with short erase time
TL;DR: In this article, the authors presented data on a new erasable phase change medium, demonstrating for the first time that very short erase times can be obtained without sacrificing room-temperature stability of the amorphous state.
Journal ArticleDOI
The systems bismuth-tellurium and antimony-tellurium and the synthesis of the minerals hedleyite and wehrlite
Allan Brown,B. Lewis +1 more
TL;DR: In this paper, the synthesis of alloys in the systems Bi-Te and Sb-Te has been investigated using a technique in which the component elements are simultaneously heated and agitated in glass or silica capsules.
Journal ArticleDOI
Phase-change optical recording in TeSeSb alloys
C. J. van der Poel,Dirk J. Gravesteijn,W. G. V. M. Rippens,H. T. L. P. Stockx,C. M. J. van Uijen +4 more
TL;DR: In this paper, the tradeoff between long-term stability and erasure time varies with alloy composition and, for some alloys, attractive properties with respect to data retention and Erasure times are found.