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 temperature from 100 K to 1300 K. Optimal configuration of electrodes and mechanical contacts of the thermocouples, current leads and potential probes with sample make it possible to measure a large variety of materials and result in a flexibility with respect to the sample form and dimensions. Both, bulk and thin film samples can be investigated. The measurements can be done in vacuum or in an inert gas atmosphere. Samples with resistance varying from 0 /spl Omega/ up to 200 k/spl Omega/ (1 G/spl Omega/ in case of the resistivity measurement) can be measured. High precision and high reliability of the system have been proved during more than two years use. The resistivity and thermopower of pure Ni, CeB/sub 6/ heavy fermion compound and a Cr-Si thin film composite are presented as a test material to demonstrate the possibilities and accuracy of this experimental set-up.