Electrical Resistance, Thermal Conductivity and Thermoelectric Power of Transition Metals at High Temperatures

Abstract

In the Mott model for s - d scattering, the electrical resistivity, thermal conductivity, and thermoelectric power are calculated at high temperatures for palladium, platinum, rhodium, iridium, molybdenum, and tungsten, by assuming proper electronic structures, and making use of the density of states determined in the rigid band model from the data of low temperature specific heat coefficients. The results are compared with experiments. The calculated temperature dependences of electrical resistivity, thermal conductivity, and thermoelectric power at high temperatures are found to be strongly dependent on the shape of the density of states and the position of the Fermi level. All of these temperature dependences are consistent with the experimental results. It is confirmed that there is a strong correlation between these temperature dependences and those of electronic specific heat coefficient and spin susceptibility.