Temperature dependences of electrical resistivity and thermal expansion in the intermetallic compound LiIn

Abstract

Measurements of the temperature dependence of the electrical resistivity and the thermal expansion for LiIn compound are carried out under argon atmosphere at temperatures between 30 and 400 °C, and anomalous changes are observed near about 300 °C for both the experiments. It is estimated that the anomalous changes are due to the creation of vacancies at Li-sites. The formation energy of the vacancy is obtained to be (0.64 ± 0·03) eV from the excess electrical resistivity and to be (0.61 ± 0·05) eV from the excess thermal expansion.