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Time-Dependence of Electrical-Resistance at High-Pressure in Some Tellurium Based Amorphous-Alloys

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  • Physics


Electrical resistance measurements are reported for amorphous $In_{20}Te_{80}$ and $Cu_{25}Au_5Te_{70}$ alloys up to a pressure of 80 Kbar using a Bridgman anvil apparatus and a four lead arrangement to measure resistances. The amorphous samples are produced by liquisol quenching. The resistance shows time dependent changes which are analysed in detail. The contention that there is a pressure-induced transformation from the amorphous to the crystalline phase is confirmed by X-ray diffraction of samples recovered after they were pressurised to 35 Kbar in a hydrostatic environment.

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