Parthasarathy, G and Rao, KJ and Gopal, ESR (1984) High-Pressure Studies Of SE100-XTEX Glasses. In: Philosophical magazine b-physics of condensed matter statistical mechanics electronic optical and magnetic properties, 50 (3). pp. 335-346.
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High pressure resistivity measurements on Se100-xTex, glasses for 0≤x≤30 are reported. Two composition regions, where the transport and transformation behaviour are different, are identified. For 0≤x≤6, there is a first-order-like transformation to metallic crystalline states, while for x>6 the transformation appears to be continuous. Glass-transition temperatures also show differences in trends as a function of composition around 6% Te. An attempt is made to explain the composition-dependent trends on the basis of known structural features of selenium glasses and of the nature of tellurium bonding. At concentrations with up to 6% tellurium, Te most likely enters selenium chain terminations, substituting for negatively charged Se1- defects, while at larger concentrations, tellurium probably enters chains and rings by a random substitution.
| Item Type: | Journal Article |
|---|---|
| Publication: | Philosophical magazine b-physics of condensed matter statistical mechanics electronic optical and magnetic properties |
| Publisher: | Taylor and Francis Group |
| Additional Information: | Copyright for this article belongs to Taylor and Francis Group. |
| Department/Centre: | Division of Chemical Sciences > Solid State & Structural Chemistry Unit Division of Physical & Mathematical Sciences > Physics |
| Date Deposited: | 12 Aug 2009 05:52 |
| Last Modified: | 12 Aug 2009 05:52 |
| URI: | http://eprints.iisc.ac.in/id/eprint/20630 |
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