Vibrational spectroscopy of LaBSiO5 glass and glass-crystal composites

被引：23

作者：

Kratochvílová-Hrubá, I

Gregora, I

Pokorny, J

Kamba, S

Zikmund, Z

Petzelt, J

Cernansky, M

Studnicka, V

Sigaev, VN

Smelyanskaya, EN

机构：

[1] Acad Sci Czech Republ, Inst Phys, Prague 18221 8, Czech Republic

[2] Mendeleev Univ Chem Technol, Moscow 125190, Russia

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 2001年 / 290卷 / 2-3期

关键词：

D O I：

10.1016/S0022-3093(01)00794-3

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：

Infrared (IR) reflectivity and Raman scattering spectra of LaBSiO5 glass and glass-crystal composites were studied in the temperature range 25-260 degreesC. Using an analogy with the LaBGeO5 crystal it wits possible to assign the main spectral features of the LaBSiO5 glass and glass-crystal composites. The BO4 chain arrangement and the bending vibrations Of SiO4 are influenced by the loss of the long-range order in the glass whereas the stretching vibrations of the SiO4 groups are practically unaffected. The structural disorder in LaBSiO5 crystallites is caused by rotation of BO4 tetrahedra. (C) 2001 Published by Elsevier Science B.V.

引用

页码：224 / 230

页数：7

共 20 条

[1] Structural aspects of the 530 degrees C phase transition in LaBGeO5 [J].