RAMAN-SCATTERING AND XAFS STUDY OF OPTICALLY NONLINEAR GLASSES OF THE TIO2-NAPO3-NA2B4O7 SYSTEM

被引：17

作者：

CARDINAL, T ^{[1
]}

FARGIN, E ^{[1
]}

LEFLEM, G ^{[1
]}

COUZI, M ^{[1
]}

机构：

[1] UNIV BORDEAUX 1,CNRS,URA 124,SPECT MOLEC & CRISTALLINE LAB,F-33405 TALENCE,FRANCE

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 1995年 / 120卷 / 01期

关键词：

D O I：

10.1006/jssc.1995.1390

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Raman scattering and X-ray absorption studies have been performed on nonlinear optical glasses with compositions xTiO(2), yNaPO(3), ZNa(2)B(4)O(7) (y/z = 0.95/0.05 and x = 0 to 42.2% molar). A model is proposed to explain the progressive modifications of Raman and XAFS spectra with increasing x. Two different types of oxygenated sites for titanium have been identified, in which Ti is respectively six-fold and five-fold coordinated. The rate of five-fold coordinated Ti is increasing with x, and the formation of Ti-O-Ti-O-... chains with alternating short and long Ti-O distances have been evidenced for the highest concentrations of TiO2. (C) 1995 Academic Press,Inc.

引用

页码：151 / 156

页数：6

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