On the origin of nanovoids in binary chalcogenide glasses studied by FSDP-related XRD, Pals and Monte-Carlo simulation

T. Kavetskyy, O. Shpotyuk, V. Boyko, J. Filipecki, M. Popescu.

Visnyk Lviv Univ. Ser. Physic., vol. 40, 2007, p. 153-158.

Abstract

In the present work the origin of nanovoids in typical binary As2Se3 and As2S3 glasses has firstly been analyzed using combination of experimental methods, such as X-ray diffraction modified in respect to the first sharp diffraction peak (FSDP-related XRD) and positron annihilation lifetime spectroscopy (PALS), along with theoretical modelling based on Monte-Carlo procedure. It has been established a good agreement between experimental and theoretical results obtained. It is supposed that the approach proposed to characterize nano-scale void species structure in the investigated binary glass compositions can also be used for ternary network glasses within As2S(Se)3-based sub-systems.

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