Investigation of the Raman spectra of CuxAgl−xGaS2 solid solutions

Raman spectra in (┴, ┴) and (║, ║) polarizations are investigated on crystals of CuGaS₂, AgGaS₂ compounds and Cu_xAg_l−xGaS₂ solid solutions. The frequencies of longitudinal and transverse optical phonons are determined, their concentration dependences are constructed, and the behavior of the vibrational modes in Cu_xAg_l−xGaS₂ solid solutions is established. Belarusian State University of Information Science and Radioelectronics, 6P, Brovka St., 220069, Minsk, Belarus. Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 65, No. 3, pp. 447–449, May–June. 1998.