| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 8041113 | Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms | 2014 | 6 Pages |
Abstract
A newly modified correlation equation between defect-related positron lifetime determined within two-state trapping model and radius of corresponding free-volume-type defects was proposed to describe compositional variations in atomic-deficient structure of covalent-bonded chalcogenides like binary As-S/Se glasses. Specific chemical environment of free-volume voids around neighboring network-forming polyhedrons was shown to play a decisive role in this correlation, leading to systematically enhanced volumes in comparison with typical molecular substrates, such as polymers.
Related Topics
Physical Sciences and Engineering
Materials Science
Surfaces, Coatings and Films
Authors
O. Shpotyuk, A. Ingram, M. Shpotyuk, J. Filipecki,