Elastic Moduli of Indium Antimonide

By using the composite resonator technique, the elastic moduli of InSb have been measured as a function of temperature between 77°K and 700°K. The results give good agreement with Born-Smith dynamic lattice theory if nearest neighbor interactions alone are considered. The value of ${\theta }_D$ is found to be 208°K by using Sutton's method. High-temperature behavior of the constants is discussed.