1991•TEION KOGAKU (Journal of Cryogenics and Superconductivity Society of Japan)Open access

Thermopower measurement of a thermocouple under magnetic fields.

Koichi Nara, Hideyuki Kato, Masahiro Okaji

Abstract

The problem of a thermocouple under a static magnetic field is discussed.The results reported until now are surveyed and an experimental condition to be taken to get a reliable result is proposed.Following the proposal, the magnetic field dependence of the thermopower (relative Seebeck coeffi cient) of Au+0.07 at.% Fe vs. normal silver thermocouple was measured between 20K and 40K under the magnetic fields of up to 8T.The increment of the thermopower reached about 10% at its maximum at 20K under 8T and decreased monotonously with temperature.

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Key concepts: Thermocouple, Seebeck coefficient, Magnetic field, Materials science, Thermoelectric effect, Condensed matter physics, Temperature measurement, Field (mathematics)