CONVECTO-DIFFUSIVE GROWTH OF LEAD BROMIDE CRYSTALS - A TEST OF THEORIES

Authors
SINGH NB STEWART AM HAMACHER RD MAZELSKY R DUVAL WMB SANTORO GJ DEWITT R LEHOCZKY SL
Citation
Nb. Singh et al., CONVECTO-DIFFUSIVE GROWTH OF LEAD BROMIDE CRYSTALS - A TEST OF THEORIES, Journal of crystal growth, 139(1-2), 1994, pp. 158-164
Citations number
8
Categorie Soggetti
Crystallography
Journal title
Journal of crystal growth → ACNP
ISSN journal
00220248
Volume
139
Issue
1-2
Year of publication
1994
Pages
158 - 164
Database
ISI
SICI code
0022-0248(1994)139:1-2<158:CGOLBC>2.0.ZU;2-4
Abstract
A comparative study of thermosolutal convection was carried out by gro wing lead bromide single crystals in a transparent Bridgman furnace. W e doped the high purity lead bromide by silver bromide and studied the microsegregation of silver in the matrix of the crystal. Theories bas ed on two extremes: complete diffusive or convective transport did not agree with the experimental data. X-ray rocking curves and contour sc ans showed that increasing solutal convection deteriorated the crystal quality.