Kinetic Studies of Bulk Se70Ge30-xMx {X= 0.5 & M = Ag, Cd, Pb} Chalcogenide Semiconducting Glasses
S. A. Fayek; M. Fadel; E. G. El-Metwally;
Abstract
The thermal stability and crystallization of Se-Ge and Se-Ge-M alloys (M
= Cd, Ag, Pb) were studied by differential thermal analysis (DTA). A
comparison of various simple quantitative methods to assess the level of
stability of the glassy materials in the above mentioned system is presented.
All of these methods are based on characteristic temperatures, obtained by
heating of the samples in non-isothermal regime, such as the glass transition
temperature, Tg , the temperature at which crystallization begins, Tin , the
temperature corresponding to the maximum crystallization rate, Tp , and the
melting temperature, Tm. In this work the thermal stability has been evaluated
experimentally and correlated with the activation energies of glass transition
and crystallization by this kinetic criterion and compared with those evaluated
by other criteria.
= Cd, Ag, Pb) were studied by differential thermal analysis (DTA). A
comparison of various simple quantitative methods to assess the level of
stability of the glassy materials in the above mentioned system is presented.
All of these methods are based on characteristic temperatures, obtained by
heating of the samples in non-isothermal regime, such as the glass transition
temperature, Tg , the temperature at which crystallization begins, Tin , the
temperature corresponding to the maximum crystallization rate, Tp , and the
melting temperature, Tm. In this work the thermal stability has been evaluated
experimentally and correlated with the activation energies of glass transition
and crystallization by this kinetic criterion and compared with those evaluated
by other criteria.
Other data
| Title | Kinetic Studies of Bulk Se70Ge30-xMx {X= 0.5 & M = Ag, Cd, Pb} Chalcogenide Semiconducting Glasses | Authors | S. A. Fayek; M. Fadel; E. G. El-Metwally | Issue Date | Nov-2007 | Journal | International Journal of Pure and Applied Physics | Volume | 3 | Start page | 109 | End page | 121 |
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