Etude par R.P.E. d'electrolytes vitreux appartenant au systeme B2O3-Li2O-LiCl |
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Authors: | A Levasseur JC Brethous P Hagenmuller R Berger G Vignaud |
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Institution: | Laboratoire de Chimie du Solide du C.N.R.C., Université de Bordeaux I 351 cours de la Libération, 33405 Talence, Cedex, France;Laboratoire d''Optique Ultra-Hertzienne, et L.A. C.N.R.S. n° 283 Université de Bordeaux I, 351 cours de la Libération, 33405 Talence, Cedex, France |
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Abstract: | An EPR study of fast Li+ ion vitreous conductors belonging to the B2O3-Li2O-LiCl system has been carried out. The samples have been subjected to X-ray irradiation at room temperature. Two types of paramagnetic centers have been observed. The first one is the Cl2- species (Vk center) present in the part of the vitreous domain which corresponds to low LiCl concentrations, it vanishes when Li+ and Cl- begin to order. The second one is of the B.O.H.C. type often present in alkali borate glasses. Its presence shows the similarity between the boron-oxygen network of the alkali borate glasses and of our samples containing alkali chloride. |
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