6533b7cffe1ef96bd1258fea

RESEARCH PRODUCT

Free-volume Study in GeS2-Ga2S3-CsCl Chalcohalide Glasses Using Positron Annihilation Technique

Roman SzatanikHalyna KlymAdam IngramOleh Shpotyuk

subject

free-volume entitiesMaterials scienceChalcogenidePhysics and Astronomy(all)Positron trappingMolecular physicschemistry.chemical_compoundchalcogenideVolume (thermodynamics)chemistryAnnihilation radiationchalcohalidepositron trappingSpectroscopyDoppler broadeningPositron annihilationglass

description

Abstract Positron annihilation lifetime spectroscopy combined with Doppler broadening of annihilation radiation was applied to study free-volume entities in Ge-Ga-S glasses having different amount of CsCl additives. It is shown that the structural changes caused by CsCl additives can be adequately described by positron trapping modes determined within two-state model. The results testify in a favor of rather unchanged nature of corresponding free-volume voids responsible for positron trapping in the studied glasses, when mainly concentration of these traps is a subject to most significant changes with composition.

yearjournalcountryeditionlanguage
2015-01-01Physics Procedia
10.1016/j.phpro.2015.10.026http://dx.doi.org/10.1016/j.phpro.2015.10.026