Bulk modulus and Debye temperature of ternary chalcopyrite semiconductors

A simple relation between bulk modulus, hardness, refractive index and ioni city has been developed. The estimated bulk modulus values have then been u sed to evaluate the values of Debye temperature. The results have been comp ared with the corresponding values reported in literature. This procedure e ventually allows to easily evaluate unknown bulk modulus and Debye temperat ure from crystal parameters like hardness, refractive index, ionicity and i nter-ionic separation. The results are in excellent agreement with the avai lable experimental data.