J. Phys. IV France 07 (1997) C1-165-C1-166
Thermocouple Junctioned with FerritesO.H. Kwon1, Y. Fukushima1, M. Sugimoto1 and N. Hiratsuka2
1 Teikyou Heisei University, Ichihara-city, Chiba-Prefecture, Japan
2 Saitama University, Shimo Ohkubo, Urawa-city, Japan
Measurements are reported of the thermo-e.m.f. of a thermoelectric junction composed of polycrystalline ferrites or multilayered ferrite films as a function of the temperature. The thermo-e.m.f. of the bulk and ferrite films was much larger than that of the conventional thermoelectric junction made of metals. A positive or negative thermoelectric power was observed depending on the difference in the combination of ferrites. The temperature dependence was almost linear from room temperature up to about 500°C and above which it showed a tendency to saturate. Application of a magnetic field had a reducing effect upon the thermo-e.m.f. at temperature of room to the Curie temperature.
© EDP Sciences 1997