Pressure induced anomalies in an as-Al-Te glass

Mohan, Murali and Giridhar, A and Mahadevan, Sudha (1994) Pressure induced anomalies in an as-Al-Te glass. In: Proceedings of the National Conference on High Pressure Science and Technology, 10-11 Oct 1994, Bangalore, India.

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The pressure and temperature dependences of the electrical resistance of A34.4AlTe61.6 and As16.mA116.67Te66 66 glasses have been investigated using an opposed anvil setup. The resistance of the glasses exhibit N lo6 fold decrease with increasing pressure up to 7 GPa at 300 K. This hehaviour can be traced to the corresponding changes with pressure of the activation energy for electrical conduction, AE(p).The As34.4A14Te61.6 glass exhibits pressure induced anomalies at 2 GPa in the pressure variation of AE(p) and the pressure coefficient of electrical resistance. Such an anomaly is not seen for the As16.67A116.67Te66.66 glass. The anomalies point to a pressure induced morphological structural transformation in the AS.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Electrical resistance;Electrical conduction;Pressure calibration
Subjects: PHYSICS > Physics(General)
Depositing User: M/S ICAST NAL
Date Deposited: 31 Jul 2008
Last Modified: 17 Jun 2010 08:27

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