Pressure Induced Phase Transitions in Nickel and Chromium Based Alloys

Ramesh, TG and Shubha, V (2000) Pressure Induced Phase Transitions in Nickel and Chromium Based Alloys. Metals Materials and Processes, 12 (2 & 3). pp. 127-142.

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This article describes the developments carried out in our laboratory in establishing absolute thermoelectric power (TEP) and AC resistivity as powerful diagnostic tools to study continuous phase transitions at high pressures. The teflon cell arrangement and the pyrophyllite-talc assembly for measurement of TEP and resistivity used in the conventional piston - cylinder high pressure apparatus will be discussed . A PC based data acquisition system designed for high-resolution measurement of these electronic transport properties of conducting solids at ambient and high pressures as a function of temperature will be described in some detail . The power of these techniques will be demonstrated through new observations on a pressure induced second order transition in nickel and in commensurate - paramagnetic and incommensurate-paramagnetic transitions in some chromium based alloys

Item Type: Article
Uncontrolled Keywords: Thermopower, high pressure, magnetic transition, nickel, chromium alloys .
Subjects: CHEMISTRY AND MATERIALS > Chemistry and Materials (General)
Depositing User: Ms Indrani V
Date Deposited: 30 Jan 2012 05:39
Last Modified: 30 Jan 2012 05:39

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