OPTICAL METHODS FOR MEASURING IODINE VAPOR DURING MERCURIC IODIDE CRYSTAL-GROWTH BY PHYSICAL VAPOR TRANSPORT

Authors
NASON D BIAO Y BURGER A
Citation
D. Nason et al., OPTICAL METHODS FOR MEASURING IODINE VAPOR DURING MERCURIC IODIDE CRYSTAL-GROWTH BY PHYSICAL VAPOR TRANSPORT, Journal of crystal growth, 146(1-4), 1995, pp. 23-28
Citations number
11
Categorie Soggetti
Crystallography
Journal title
Journal of crystal growth → ACNP
ISSN journal
00220248
Volume
146
Issue
1-4
Year of publication
1995
Pages
23 - 28
Database
ISI
SICI code
0022-0248(1995)146:1-4<23:OMFMIV>2.0.ZU;2-J
Abstract
Optical methods have been established for in-ampoule measurements of t he iodine vapor concentration during the growth of mercuric iodide (Hg I2) single crystals by physical vapor transport (PVT). Significant con centrations of iodine vapor, which can vary during the growth period, occur in some ampoules. The absorptivity of iodine vapor at 514 nm is 7.7 x 10(5) cm(2) mol(-1). Differential scanning calorimetry (DSC) mea surements correlate with vapor absorption and indicate the presence of free crystalline iodine in vapor-grown HgI2.