Raman spectroscopy and X-ray diffraction studies of (GeS2 )100-x(SbSI)x glasses and composites on their basis

Abstract

Abstract. The structure and structural changes under the isothermal annealing of (GeS 2 ) 100-x (SbSI) x (0 ≤ x ≤ 90) glasses were investigated by Raman spectroscopy and X-ray diffraction methods. The nanoheterogeneous nature of these glasses structure has been revealed. The matrix of (GeS 2 ) 100-x (SbSI) x glasses is basically built just of binary GeS 4 , SbS 3 and SbI 3 structural groups and contains a small amount of molecular fragments with homopolar Ge Ge  and S S  bonds. The phase structure arising in the glass matrix at crystallization corresponds to the structure of crystalline SbSI.

Effective ionic transport in AgI‐based Ge(Ga)–Sb–S chalcogenide glasses

“…Because the tetrahedral‐like [Ga(Ge)S 4−x I x ] structure units are less generated, which was composed of the bone framework inside the ions transportation channel. The related vibration of [GeS 4‐x I x ] units located at 360 and 419 cm −1 were only observed in samples containing Ge, and [GaS 4‐x I x ] units were hardly seen in the samples containing Ga . Significant peaks centered at 218 and 472 cm −1 were attributed to the stretching and bending vibrations mode of S–S homopolar bonds, which usually exist in the form of dimers, small chains, or S8 rings by the excess S in glass network.…”

Fast Ag-Ion-Conducting GeS2–Sb2S3–AgI Glassy Electrolytes with Exceptionally Low Activation Energy

“…Clearly, the intensity of these two Raman bands is directly related to GeS 2 content in these glasses. According to the detailed Raman studies on GeS 2 –Sb 2 S 3 and GeS 2 –SbSI, , these Raman bands at 360 and 419 cm –1 originated from the vibration of [GeS 4– x I x ] structural units.…”