Crystallization of bismuth borate glasses

被引：23

作者：

Bajaj, Anu ^{[1
]}

Khanna, Atul ^{[1
]}

机构：

[1] Guru Nanak Dev Univ, Dept Appl Phys, Amritsar 143005, Punjab, India

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2009年 / 21卷 / 03期

关键词：

CRYSTAL-GROWTH; ELECTRONIC POLARIZABILITY; PHYSICAL-PROPERTIES; OPTICAL-PROPERTIES; THERMAL-EXPANSION; POLYMORPHISM; BASICITY; SPECTRA; B-11;

D O I：

10.1088/0953-8984/21/3/035112

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Bismuth borate glasses with Bi2O3 concentration of 20-66 mol% were prepared by melt quenching and devitrified by heat treatment above their glass transition temperatures. All glasses show a strong tendency towards crystallization on annealing that increases with Bi2O3 concentration. The crystalline phases formed on devitrification were characterized by FTIR absorption spectroscopy and DSC measurements. Our studies reveal that phases produced in glasses are strongly determined by initial glass composition and the two most stable crystalline phases are: Bi3B5O12 and Bi4B2O9. The metastable BiBO3 phase can also be formed by devitrification of glass with 50 mol% of Bi2O3. This phase is, however, unstable and decomposes into Bi3B5O12 and Bi4B2O9 on prolonged heat treatment.

引用

页数：8

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