TEMPERATURE AND CONCENTRATION DEPENDENCE OF ELECTROPHYSICAL PROPERTIES OF Pr - Bi ALLOYS SYSTEMS AND COMPOUNDS
The temperature and concentration dependences of electrophysicalproperties of the Pr - Bi alloys system and compounds. The formation in the Pr - Bi system of compounds: Pr2Bi, Pr5Bi3, Pr4Bi3, PrBi, PrBi2 was confirmed by the X-ray methods and microstructural analyzes.Alloys and compounds of the Pr - Bi system were obtained by direct interaction of the components - Pr and Bi in sealed molybdenum crucibles in the temperature range of 923-1573 K. The study of the concentration and temperature dependence of the electrical resistivity and thermos emf of alloys and compounds of the Pr - Bi system indicates their metallic conductivity. Moreover, their specific electrical resistance varies within (1.4-3.2) ۰10<sup>-6</sup> Om ۰m.