Absolute thermoelectric power measuring system for high-pressure studies

Shubha, V and Ramesh, TG (1986) Absolute thermoelectric power measuring system for high-pressure studies. High Temperatures - High Pressures, 18 (3). pp. 311-316.

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Abstract

A precision circuitry for the continuous and rapid measurement of absolute thermoelectric power (TEP) of metallic and semiconducting specimens under controlled conditions of temperature and pressure has been developed. The design of the system is centered around a fourth-order polynomial curve-fitting circuit which was primarily developed for the linearization of the nonlinear thermo-emf temperature characteristic. The variation with temperature of the relative TEP of the thermocouple and the absolute TEP of either of the constituents of the thermocouple, which are essential for the measurement of absolute TEP of the specimen, can also be simulated with this circuitry. The performance of the system is demonstrated by some typical data on the pressure-induced gamma - alpha transition in cerium.

Item Type: Journal Article
Uncontrolled Keywords: Thermoelectricity-measurements;Absolute thermoelectricity-measurements;Absolute thermoelectric power;Thermoelectric power;Thermoelectric power (TEP);High pressure engineering
Subjects: CHEMISTRY AND MATERIALS > Chemistry and Materials (General)
Division/Department: Materials Science Division, Materials Science Division
Depositing User: Ms. Alphones Mary
Date Deposited: 14 Jun 2005
Last Modified: 24 May 2010 09:38
URI: http://nal-ir.nal.res.in/id/eprint/442

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