Compositional Dependence of Optical Modes Frequencies in T1Ga(x)In(1-x)S(2) Layered Mixed Crystals (0 <= x <= 1)

Isik M., Gasanly N., Korkmaz F.

ACTA PHYSICA POLONICA A, vol.126, no.3, pp.747-750, 2014 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 126 Issue: 3
  • Publication Date: 2014
  • Doi Number: 10.12693/aphyspola.126.747
  • Journal Name: ACTA PHYSICA POLONICA A
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.747-750
  • Middle East Technical University Affiliated: Yes

Abstract

The infrared transmittance and Raman scattering spectra in TlGaxIn1-xS2 (0 <= x <= 1) layered mixed crystals grown by the Bridgman method were studied in the frequency ranges of 400-2000 and 250-400 cm(-1), respectively. The bands observed at room temperature in IR transmittance spectra of TlGaxIn1-xS2 were interpreted in terms of multiphonon absorption processes. The dependences of the frequencies of IR- and Raman-active modes on the composition of TlGaxIn1-xS2 mixed crystals were also established. The structural characterization of the mixed crystals was investigated by means of X-ray diffraction measurements and compositional dependence of lattice parameters was revealed.