GROWTH-RATE AND CRYSTAL HABIT OF GERMANIUM TELLURIDE

Authors
YASHINA LV ZLOMANOV VP DERNOVSKII VI SHTANOV VI TANANAEVA OI BUKHANKO NG
Citation
Lv. Yashina et al., GROWTH-RATE AND CRYSTAL HABIT OF GERMANIUM TELLURIDE, Inorganic materials, 33(2), 1997, pp. 167-177
Citations number
11
Categorie Soggetti
Material Science
Journal title
Inorganic materials → ACNP
ISSN journal
00201685
Volume
33
Issue
2
Year of publication
1997
Pages
167 - 177
Database
ISI
SICI code
0020-1685(1997)33:2<167:GACHOG>2.0.ZU;2-5
Abstract
The effects of the major growth parameters (thermal conditions, pressu re, vapor composition, and growth charge composition) on growth rate a nd morphology are studied for germanium telluride crystals grown by cl osed-system sublimation. Growth kinetics were characterized by in situ measurements of the linear crystal size. Growth rate was also assesse d from gravimetry data. The ranges of growth parameters were identifie d in which the process is controlled by vapor transport or proceeds in a mixed (mass transport + condensation) regime. The calculated growth rates agree well with experiment. Estimates based on our results yiel d a = (2.2 +/- 0.4) x 10(-3) for the effective condensation coefficien t and D-0(GeTe/Ar) = 1.48 +/- 0.06 cm(2)/s for the effective diffusion coefficient in the vapor phase.