Thermodynamic and constitutional studies of the PbTe-GeTe system

Shamsuddin, ; Ramachandrarao, P. ; Misra, S. ; Anantharaman, T. R. (1975) Thermodynamic and constitutional studies of the PbTe-GeTe system Journal of Materials Science, 10 (11). pp. 1849-1855. ISSN 0022-2461

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Official URL: http://www.springerlink.com/content/jnj05xn1223247...

Related URL: http://dx.doi.org/10.1007/BF00754472

Abstract

Some of the uncertainties concerning phase equilibria in the pseudo-binary system PbTe-GeTe have been clarified in this thermodynamic and constitutional investigation. The heats of fusion of PbTe, GeTe and Pb0.2 Ge0.8 Te have been determined in a differential thermal analysis calorimeter. Based on these results and solution thermodynamics, the phase diagram of the system has been synthesized. Evidence for spinodal decomposition in this system has been presented for the first time with the aid of X-ray diffraction as well as transmission and scanning electron-microscopic data. The results are in confirmity with a pseudo-isomorphous system having a solid state miscibility gap.

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Deposited On:27 Aug 2011 20:26
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