Funct. Mater. 2017; 24 (1): 026-030.
Birefringence of InxTl1-xI solid state solution
I.Franko National University of Lviv, 8a Kyryla i Mefodiya St., 79005 Lviv, Ukraine
The results of investigation of optical properties of the newly synthesized solid solution InxTl1-xI in concentration range of 0.4≤x≤0.7 are presented. Birefringence is measured for InxTl1-xI solid state solution. Dependence of the birefringence Δ ni on the concentration of thallium iodide is investigated. Dielectric permeability distribution ε(E) is calculated using pseudopotential method in the framework of density functional theory. The real ε1 and imaginary ε2 parts of the dielectric constant are calculated for polarization E
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