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Titolo:
The local structure of Sm-doped aluminosilicate glasses prepared by sol-gel method
Autore:
Jin, JS; Sakida, S; Yoko, T; Nogami, M;
Indirizzi:
Kyoto Univ, Inst Chem Res, Kyoto 6110011, Japan Kyoto Univ Kyoto Japan 6110011 Univ, Inst Chem Res, Kyoto 6110011, Japan Nagoya Inst Technol, Dept Mat Sci & Engn, Showa Ku, Nagoya, Aichi 4668555,Japan Nagoya Inst Technol Nagoya Aichi Japan 4668555 agoya, Aichi 4668555,Japan
Titolo Testata:
JOURNAL OF NON-CRYSTALLINE SOLIDS
fascicolo: 1-3, volume: 262, anno: 2000,
pagine: 183 - 190
SICI:
0022-3093(200002)262:1-3<183:TLSOSA>2.0.ZU;2-P
Fonte:
ISI
Lingua:
ENG
Soggetto:
ROOM-TEMPERATURE; FLUORESCENCE; ALUMINUM; IONS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
17
Recensione:
Indirizzi per estratti:
Indirizzo: Yoko, T Kyoto Univ, Inst Chem Res, Kyoto 6110011, Japan Kyoto Univ KyotoJapan 6110011 st Chem Res, Kyoto 6110011, Japan
Citazione:
J.S. Jin et al., "The local structure of Sm-doped aluminosilicate glasses prepared by sol-gel method", J NON-CRYST, 262(1-3), 2000, pp. 183-190

Abstract

The local structures of Sm and Al in Sm-doped aluminosilicate glasses prepared by the sol-gel method were investigated by using Al-27 MAS NMR spectroscopy and X-ray radial distribution function (RDF) analysis. It is found that at low alumina content (1 mol%). the glass network consists of SiO4 and AlO6 structural units. At higher alumina content, AlO4 and AlO6 structural units coexist in the glasses. It is considered that the formation of AlO4 results in enhancement of the dispersion of Sm ions in these glasses. The average coordination number of Sm in a 10Al(2)O(3). 90SiO(2). 1Sm(2)O(3) glass slightly increased from 7.1 to 8.5 after heat-treatment in reducing atmosphere. The role of Al ions in dispersing Sm ions in a glass matrix is discussed. (C) 2000 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 09/04/20 alle ore 13:29:36