Archidi, M.E. and Haddad, M. and Nadiri, A. and Benyaïch, F. and Berger, R. (1996) Defect centers in X-irradiated alkali phosphate glasses: EPR studies. Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, 116 (1-4). pp. 145-149.

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Official URL: https://www.scopus.com/inward/record.uri?eid=2-s2....

Abstract

X-irradiated samples of P2O5-A2WO4-A2O (A = Li, Na) glasses were studied by electron paramagnetic resonance (EPR) at X-band (9.5 GHz). Modifications of the EPR spectra are observed following in situ the sample's temperature or after thermal annealing. The spectra analysis was carried out by computer simulations specifically adapted for glasses in which statistical distributions are introduced for some EPR parameters. Three signals were detected: a hyperfine structure (doublet) which was assigned to a PO2-4 center, and two anisotropic signals attributed to the peroxy radicals.

Item Type: Article
Uncontrolled Keywords: Alkali metal compounds; Anisotropy; Annealing; Computer simulation; Defects; Glass; Irradiation; Phosphates; Signal detection; Statistical methods; Tungsten; X rays, Alkali phosphate glasses; Defect centers; Hyperfine structure signal; Peroxy radicals; Thermal annealing; X irradiation, Electron spin resonance spectroscopy
Subjects: Physics and Astronomy
Divisions: SCIENTIFIC PRODUCTION > Physics and Astronomy
Depositing User: Administrateur Eprints Administrateur Eprints
Last Modified: 31 Jan 2020 15:49
URI: http://eprints.umi.ac.ma/id/eprint/4587

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