Structure and Raman spectra of (Cu6PS5I)1–x(Cu7PS6)x mixed crystals Journal title: Semiconductor Physics, Quantum Electronics and Optoelectronics Authors: I.P. Studenyak, M.M. Luchynets, V.Yu. Izai, A.I. Pogodin, O.P. Kokhan, Yu.M. Azhniuk, D.R.T. Zahn Subject(s):