Raman-Scattering Studies of Cu(6)PS(5)Hal (Hal=cl, Br and I) Fast-Ion Conductors

Studenyak IP; Stefanovich VO; Kranjcec M; Desnica DI; Azhnyuk YM; Kovacs GS; Panko VV

Solid State Ionics, Vol.95, No.3-4, 221-225, 1997

DOI10.1016/S0167-2738(96)00477-8 Export Citation

Raman-Scattering Studies of Cu(6)PS(5)Hal (Hal=cl, Br and I) Fast-Ion Conductors

Studenyak IP, Stefanovich VO, Kranjcec M, Desnica DI, Azhnyuk YM, Kovacs GS, Panko VV

Raman scattering studies of Cu(6)PS(5)Hal (Hal = Cl, Br, I) fast-ion conducting single crystals are reported. General, though not explicit, assignment of the vibrations is performed. LO-TO splitting of the high-frequency internal vibrations of PS43- anions is observed. Raman studies of mixed Cu6P(SexS1-x)(5)I and Cu6P(SexS1-x)(5)Br crystals exhibit complicated compositional behaviour.

Keywords:PHASE-TRANSITIONS;CRYSTALS