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Titolo:
NEUTRON-DIFFRACTION AND SOLID-STATE MAS-NMR STUDIES OF THE STRUCTURE OF Y-AL-SI-O-N OXYNITRIDE GLASSES
Autore:
JIN JS; YOKO T; MIYAJI F; SAKKA S; FUKUNAGA T; MISAWA M;
Indirizzi:
KYOTO UNIV,INST CHEM RES UJI KYOTO 611 JAPAN NAGOYA UNIV,FAC ENGN NAGOYA 46401 JAPAN NIIGATA UNIV,FAC SCI NIIGATA 95021 JAPAN
Titolo Testata:
Philosophical magazine. B. Physics of condensed matter. Structural, electronic, optical and magnetic properties
fascicolo: 2, volume: 70, anno: 1994,
pagine: 191 - 203
SICI:
0958-6644(1994)70:2<191:NASMSO>2.0.ZU;2-V
Fonte:
ISI
Lingua:
ENG
Soggetto:
NUCLEAR-MAGNETIC-RESONANCE; AL2SIO5 POLYMORPHS; SYSTEM; SCATTERING; SPECTRA; SI-29;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
26
Recensione:
Indirizzi per estratti:
Citazione:
J.S. Jin et al., "NEUTRON-DIFFRACTION AND SOLID-STATE MAS-NMR STUDIES OF THE STRUCTURE OF Y-AL-SI-O-N OXYNITRIDE GLASSES", Philosophical magazine. B. Physics of condensed matter. Structural, electronic, optical and magnetic properties, 70(2), 1994, pp. 191-203

Abstract

Neutron diffraction and magic angle spinning (MAS) Al-27 and Si-29 NMR have been applied to study the local structure of glasses in the system Y-Al-Si-O with and without addition of AlN. Al-27 MAS NMR indicated that in the Y-Al-Si-O-N oxynitride glass there is no Al-N bonding and aluminium atoms occupy various sites within the glass structure. Thefirst peak of the radial distribution function curves obtained by neutron diffraction was deconvoluted into four peaks which are attributable to Si-O, Si N(Al-O(4)), Al-O(5) and Al-O(6) pairs and the coordination numbers of Si, N, Al and Y were estimated. The glass network is assumed to consist mainly of corner-sharing AlO4 tetrahedra and SiO3N tetrahedra. 86% of N atoms are three-coordinated and 14% of N atoms are two-coordinated in the present oxynitride glass.

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Documento generato il 05/04/20 alle ore 02:43:02