Effects of alkaline-earth metals on the properties of Cr0.5Ti0.5Si2 and Cr0.94Ta0.06Si2

Studies have been made on the effects of alkaline-earth metals on the structure and electrical parameters of Cr0.5Ti0.5Si2 and Cr0.94Ta0.06Si2 solid solutions. Solubility gaps occur for magnesium, calcium, and barium in the solid solutions. The alkaline-earth metals affect the fatigue resistance and thermo-emf coefficient. The alkaline-earth metals, added within their solubility limits, reduce the temperature coefficients of resistance for the solid solutions by an order of magnitude. The effects on the electrical parameters of the initial solid solutions are dependent on the electronic structures of the alkaline-earth metals.