Second harmonic generation and structure of mixed alkali titanosilicate glasses

被引：16

作者：

Nasu, H

Kurachi, K

Mito, A

Matsuoka, J

Kamiya, K

机构：

[1] NATL RES LAB METROL,TSUKUBA,IBARAKI 305,JAPAN

[2] UNIV SHIGA PREFECTURE,SCH ENGN,DEPT MAT SCI,SHIGA 522,JAPAN

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 1997年 / 217卷 / 2-3期

关键词：

D O I：

10.1016/S0022-3093(97)00218-4

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The second harmonic generation (SHG) was observed from thermally poled 7.5K(2)O . 7.5Cs(2)O . xTiO(2) (85 - x)SiO2 (mol%) glasses prepared by the conventional melting and quenching technique. The SHG intensity depended upon the TiO2 content and the SHG maximum appeared at TiO2 = 25 mol%. Using X-ray absorption spectroscopy (XAS), the existence of fivefold coordinated Ti4+ was deduced from the pre-edge peak position in X-ray absorption near the edge structure (XANES) spectrum. The Raman scattering spectra was similar to that obtained from compounds containing fivefold coordinated Ti4+. From the relationship between the amount of fivefold coordinated Ti4+ and SHG intensity, we suggest that fivefold coordinated Ti4+ may relate to the SHG center. (C) 1997 Elsevier Science B.V.

引用

页码：182 / 188

页数：7

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