THE RELATION BETWEEN TEMPERATURE-GRADIENTS AND STRUCTURAL PERFECTION OF SINGLE-CRYSTAL BI12SIO20 AND BI12TIO20 FIBERS GROWN BY THE LHPG METHOD

Citation
Vv. Prokofiev et al., THE RELATION BETWEEN TEMPERATURE-GRADIENTS AND STRUCTURAL PERFECTION OF SINGLE-CRYSTAL BI12SIO20 AND BI12TIO20 FIBERS GROWN BY THE LHPG METHOD, Optical materials, 4(2-3), 1995, pp. 433-436
Citations number
10
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Material Science
Journal title
ISSN journal
0925-3467
Volume
4
Issue
2-3
Year of publication
1995
Pages
433 - 436
Database
ISI
SICI code
0925-3467(1995)4:2-3<433:TRBTAS>2.0.ZU;2-7
Abstract
The axial temperature distribution in the sillenite fibers was calcula ted based on the elastic properties of the material. The dislocation d ensity was evaluated by the Tsivinskii's relation and compared with ob tained by the chemical etching method on single-crystal Bi12SiO20 fibe rs grown the LHPG method. It was shown that BSO fibers will crack due high axial temperature gradients if the fiber diameter exceeds some cr itical value D-crit. The relation between the temperature gradients an d the structural perfection of the as-grown fibers and the ways of the optimization of the temperature distribution during the fiber growth process has been discussed.