Effect of Annealing on Structure and Physicochemical Properties
of (Ge20Se18Te62)100 – xIx, Where x = 0, 8
H. H. Hegazya, b, c, M. A. Jaafarib, and Sharma Pankajd, *
a Research Center for Advanced Materials Science (RCAMS), King Khalid University,
P. O. Box 9004, Abha, 61413 Saudi Arabia
b Department of Physics, Faculty of Science, King Khalid University, P.O. Box 9004, Abha, Saudi Arabia
c Department of Physics, Faculty of Science, Al-Azhar University, Assiut, 71524 Egypt
d Applied Science Department, National Institute of Technical Teachers Training and Research,
Sector 26, Chandigarh, 160019 India
Correspondence to: *e-mail: pankaj@nitttrchd.ac.in
Received 23 October, 2020
Abstract—In this paper we report the structural, thermal, microstructural and infrared transmission properties of iodine doped (Ge20Se18Te62)100 – xIx (where x = 0, 8) chalco-halide glasses. The density of the specimen has been calculated experimentally. Differential thermal calorimetry shows a single glass transition temperature but two crystalline peaks. The role of annealing (503 and 593 K for 2 h) has also been taken into account to investigate the structural, microstructural, and infrared transmission properties. X-ray diffraction study has revealed that on annealing there is an origin of hexagonal Te and orthorhombic GeSe2 microcrystals which are further supported by scanning electron microscopy.
Keywords: chalco-halide glasses, glass transition temperature, microstructure, infrared transmission
DOI: 10.1134/S1087659621030032