Etude par resonance paramagnetique electronique des verres du systeme B2O3-Na2O-Na3PO4 |
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| Authors: | Mohamed Zahir Roger Olazcuaga René Berger Geneviève Vignaud |
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| Affiliation: | Laboratoire de Chimie du Solide du CNRS France;Laboratoire d''Optique Ultra-Hertzienne, L.A. CNRS No. 283, 351, cours de la Libération, 33405 Talence Cedex, France |
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| Abstract: | An EPR study of fast Na+ ion vitreous conductors of the system B2O3?Na2O?Na3PO4 has been carried out. After X-ray irradiation two types of paramagnetic centers have been observed. The first one is of boron-oxygen hole center (B.O.H.C.) type and similar to that earlier observed for other alkali borate glasses. The second one is of PO42? type. A simulation of its spectrum has been achieved and a defect model discussed. |
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