Calorimetric studies of composite superconductors based on Nb3Sn

Heat capacity measurements between 4 and 24 K have been made on Nb3Sn composite superconductors. The results are shown to be useful in determining the degree and uniformity of the compound formation through solid state reactions. Considering its simplicity and sensitivity, low temperature calorimetry should be considered as one of the practical techniques for materials characterization and manufacturing processes evaluation.