On electronic polarizabilities and refractive indices in SbSI Crystal

Abstract

The electronic polarizabilities of the constituent ions in SbSI are determined by using the dipole model among the ions. The calculated results are obtained as α_Sb = 2.53 × 10⁻²⁴ cm³, α_S = 2.67 × 10⁻²⁴ cm³ and αI = 10.9 × 10⁻²⁴ cm³, by using the experimental data about the optical indices n_a = 2.95, n_b = 3.56 and n_c = 4.52. Another model based upon the bond polarizabilities is also discussed.