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|Title:||Pressure effect on Tg for the As40Se30Te30 glass|
Jagannatha Rao, K.
|Citation:||Advances in high pressure science and technology: Proceedings of the Fourth National Conference on High Pressure Science and Technology, 11-13 September, Indira Gandhi Centre for Atomic Research, Kalpakkam, Universities Press, 1997, p153-156|
|Abstract:||The variation of the glass transition temperature (Tg) with pressure has not been studied for many glasses. Such data are important in distinguishing between the 'Iso-entropy' or 'Iso-free volume' model for the glass transition. In this direction we have developed a PC based Differential Thermal Analyser (DTA) which can be adapted to high pressure cells generally used in piston-cylinder apparatus. The salient features of this system are software control of temperature with selectable heating rate, real-time digital signal filtering and plotting of DTA signal as a function of temperature. This system facilitates measurement of DTA signal in the pressure range 0 to 30 kbar and temperature range 25 to 1000°C. In this paper we present preliminary data on the pressure variation of Tg of a standard switching glass As40 Se30 Te30|
|Copyright:||997 Universities Press|
|Appears in Collections:||Research Papers (SCM)|
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|1997 Proc IV NCHST p153.pdf|
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