Temperature behavior of thermal expansion and birefringence of InxTl1–хІ-substitution solid solutions

Аннотация

Results of studying the optical properties of In_xTl_1–хI solid solutions in the concentration domain of 0.4 ≤ х ≤ 0.9 are presented. The dependence of relative linear expansion of In_xTl_1–хI crystals (Т = 300–520 K) has been obtained. In_xTl_1–хI crystals (Т = 300–520 K). Based on this, the temperature dependence of thermal-expansion coefficient α has been found. Dependence of birefringence Δn_i on temperature and concentration of the TlI component in the solid solution has been studied.