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Issue Eur. Phys. J. Appl. Phys.
Volume 48, Number 1, October 2009
Article Number 10302
Number of page(s) 5
Section Semiconductors and Devices
DOI 10.1051/epjap/2009115
Published online 04 July 2009

Eur. Phys. J. Appl. Phys. 48, 10302 (2009)
DOI: 10.1051/epjap/2009115

Effect of tellurium substitution in Sn10Sb20Se70-XTeX (0 < X <12) amorphous chalcogenide system

R. Chander and R. Thangaraj

Semiconductor Laboratory, Department of Applied Physics, Guru Nanak Dev University, Amritsar 143005, India

rcohri@gmail.com

Received: 14 September 2008 / Accepted: 27 April 2009 / Published online: 4 July 2009

Abstract
The as-prepared samples of Sn10Sb20Se70-XTeX chalcogenide system were amorphous as evidenced by X-ray diffraction and Differential scanning calorimetry studies. The different crystalline phases emerged in annealed Sn10Sb20Se70-XTeX samples have been identified. Glass transition temperature Tg of the as-prepared samples decreases sharply with tellurium substitution upto 2 at% and then it starts increasing upto 10 at% and decreases again on further substitution of tellurium. The change in glass transition temperature Tg has been explained based on bond formation energy of different heteropolar bonds and crystalline phases obtained in the annealed samples with different tellurium contents.

PACS
64.70.kj - Glasses.
77.84.Bw - Elements, oxides, nitrides, borides, carbides, chalcogenides, etc..
64.70.ph - Nonmetallic glasses (silicates, oxides, selenides, etc.).
81.70.pg - Thermal analysis, differential thermal analysis (DTA), differential thermogravimetric analysis.
61.05.cp - X-ray diffraction.

© EDP Sciences 2009


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