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Cooling rate and situation of the glass-forming border in the GeSe2-Sb2Te3-PbSb2Te4 system

Published online by Cambridge University Press:  13 March 2012

L. Aljihmani ,
V. Vassilev  and
T. Hristova-Vasileva
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Abstract

The glass-forming ability of chalcogenide glasses from the GeSe2-Sb2Te3-PbSb2Te4 system is investigated at different cooling rates. The samples are synthesized by direct synthesis in evacuated quartz ampoules from the initial compounds and quenched in air, water, water+ice+NaCl and liquid nitrogen with cooling rates of 3, 9, 34 and 400 K/s, respectively. The obtained bulks are characterized by visual and X-ray diffraction analyses. The critical cooling rate for obtaining chalcogenide glasses from the investigated system is 34 K/s. Above this rate the border between the glassy and crystalline phases shows a tendency towards narrowing of the glass-forming region.

Keywords

Cooling rateglass-forming regionX-ray diffraction
Type
Research Article
Information
Metallurgical Research & Technology , Volume 109 , Issue 1 , 2012 , pp. 21 - 26
Copyright
© EDP Sciences 2012

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