Mahadevan, Sudha and Giridhar, A and Singh, AK (1987) Thermal expansion of some Ge-Se-Te glasses. Technical Report. National Aeronautical Laboratory, Bangalore, India.
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Abstract
Results of measurement of thermal expansion coefficient (From 50 degree C to the softening temperature) are reported for eight glass compositions of the Ge-Se-Te system. For the (Gese2)100-2xsexTex glasses, an increase of Tg and of DxB5; is seen with decreasing SeTe content. For (Gese2)22.33se30-xTex glasses, xB5;, Tg and DxB5; are invariant with composition. The results obtained presently, when examined along with those obtained for other chalcogenide glasses, indicate that chalcogenide glasses are not necessarily in a state of isofree volume during glass transition. Values ranging from 0.024 to 0.167 are obtained13; for the free volume of some chalcogenide glasses.
| Item Type: | Proj.Doc/Technical Report (Technical Report) |
|---|---|
| Uncontrolled Keywords: | Ge-Se-Te glasses;Thermal expansion;Free volume during transition |
| Subjects: | CHEMISTRY AND MATERIALS > Chemistry and Materials (General) |
| Division/Department: | Materials Science Division, Materials Science Division, Materials Science Division |
| Depositing User: | Mr. Ravikumar R |
| Date Deposited: | 22 Jul 2006 |
| Last Modified: | 24 May 2010 09:46 |
| URI: | http://nal-ir.nal.res.in/id/eprint/2149 |
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