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Optical imaging of the growth kinetics and polar morphology of zinc tris(thiourea) sulphate single crystals
Author(s) -
Dinakaran S.,
Verma S.,
Das S. Jerome,
Kar S.,
Bartwal K. S.
Publication year - 2010
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.200900555
Subject(s) - thiourea , supersaturation , morphology (biology) , kinetics , polar , crystal growth , chemistry , crystallography , anisotropy , bar (unit) , zinc , mineralogy , materials science , analytical chemistry (journal) , optics , geology , organic chemistry , paleontology , physics , quantum mechanics , astronomy , oceanography
Abstract Growth kinetics of zinc tris(thiourea) sulphate (ZTS) single crystals was imaged in two different growth geometries using laser shadowgraphy technique. Growth rates of the {010} and {001} faces were computed as a function of supersaturation. The time evolution of polar morphology of ZTS crystal based on the growth rates is presented. Except (00 $ \bar 1 $ ) face, all the other three faces are found to have a dead zone resulting in large induction period of growth. The anisotropy in the growth rates of the (001) and (00 $ \bar 1 $ ) faces was very high, resulting in polar morphology. Different chemical environments on two sides of the (001) slice are suggested as the possible cause for the polar morphology of the crystals. (© 2010 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)