PHONON SIDE-BAND SPECTRA AND LOCAL-STRUCTURE AROUND EU3+ IONS IN SODIUM GERMANATE GLASSES

被引：11

作者：

TODOROKI, S

HIRAO, K

SOGA, N

机构：

[1] Department of Industrial Chemistry, Faculty of Engineering, Kyoto University, Kyoto

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 1993年 / 193卷 / 1-2期

关键词：

Local structure - Phonon sideband spectra - Sodium germanate glasses;

D O I：

10.1016/0925-8388(93)90350-V

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The local structure around Eu3+ ions in sodium germanate glasses was investigated via the phonon sideband associated with the 5D0<--F-7(0) transition of Eu3+. It was found that the positive charge of Eu3+ was compensated by non-bridging 0 atoms (NBOs, Ge-O(theta)) of GeO4 units rather than by the excess negative charge of GeO6 units. It was also found that the number of pairs of NBOs and Na+ ions (Ge-O(theta)-Na+) around Eu3+ increased with increasing sodium content. The variation in the inhomogeneous linewidth was explained by the effect of the number of these pairs.

引用

页码：207 / 209

页数：3

共 5 条

[1]

Murthy M. K., 1964, PHYS CHEM GLASSES-B, V5, P144

[2] PHONON SIDE-BAND OF EU-3+ IN SODIUM-BORATE GLASSES [J].