Experimental set-up for thermopower and resistivity measurements at 100-1300 K

In this paper we describe an experimental set-up for simultaneous measurements of thermopower and electrical resistivity at temperatures from 100K to 1300K. Optimal configuration of electrodes and original mechanical contacts of thermocouples, current leads and potential probes with the sample make it possible to measure a large variety of materials and result in greater flexibility with respect to the sample form and dimensions. Both bulk and thin film samples with resistances in the range from 0 Omega up to 200 k Omega (1 G Omega in case of the resistivity measurement) can be investigated. Precision and high reliability of the system have been proven during more than three years of use. The resistivity and thermopower of pure Pb, Cu and Ni, and a Cr-Si thin film composite are presented as test materials to demonstrate the possibilities and accuracy of this experimental set-up.