Growth of single crystals of ZrW2O8

Authors
Citation
Gr. Kowach, Growth of single crystals of ZrW2O8, J CRYST GR, 212(1-2), 2000, pp. 167-172
Citations number
15
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
JOURNAL OF CRYSTAL GROWTH
ISSN journal
00220248 → ACNP
Volume
212
Issue
1-2
Year of publication
2000
Pages
167 - 172
Database
ISI
SICI code
0022-0248(200004)212:1-2<167:GOSCOZ>2.0.ZU;2-Y
Abstract
The compound, ZrW2O8, exhibits an unusual negative coefficient of thermal e xpansion of approximately -10 ppm/degrees C over ambient temperatures. The incongruent decomposition point-and narrow thermal stability limits of ZrW2 O8 from 1105 to 1257 degrees C severely restrict crystal growth conditions. However, single crystals of ZrW2O8 having masses on the order of a gram we re grown by an unusual layered self-flux technique. Crystals were character ized by X-ray diffraction, inductively coupled plasma emission spectroscopy , dilatometry, and etching behavior. Details of the crystal growth techniqu e and possible growth mechanisms are discussed. (C) 2000 Elsevier Science B .V. All rights reserved.