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Effect of isomorphic atom substitution on the refractive index and oscillator parameters of TlInS 2x Se 2(1‐x) (0.25 ≤ x ≤ 1) layered mixed crystals
Author(s) -
Gasanly N. M.
Publication year - 2010
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.201000294
Subject(s) - refractive index , dispersion (optics) , transmittance , atom (system on chip) , wavelength , reflectivity , oscillator strength , optics , materials science , analytical chemistry (journal) , chemistry , range (aeronautics) , optoelectronics , spectral line , physics , chromatography , astronomy , computer science , composite material , embedded system
The optical properties of TlInS 2x Se 2(1‐x) mixed crystals (0.25 ≤ x ≤ 1) have been studied at room temperature through the transmittance and reflectivity measurements in the wavelength range of 400–1100 nm. The spectral dependence of the refractive index for all compositions of studied crystals were obtained. The dispersion of the refractive index is discussed in terms of the Wemple–DiDomenico single‐effective‐oscillator model. The compositional dependencies of refractive index dispersion parameters: oscillator energy, dispersion energy and zero‐frequency refractive index were revealed. (© 2010 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)