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In situ Observed Twin Formation on ZnSe Crystals Growing by Sublimation
Author(s) -
Schönherr E.,
Freiberg M.,
Hartmann H.
Publication year - 1997
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.2170320805
Subject(s) - sublimation (psychology) , crystal twinning , supersaturation , supercooling , ampoule , in situ , crystallography , materials science , crystal growth , chemistry , thermodynamics , physics , composite material , psychology , microstructure , organic chemistry , psychotherapist
ZnSe crystals were grown by sublimation in closed ampoules between 1335 K and 1365 K. The growth was observed in situ with a video camera after an abrupt change of the supersaturation. The crystals developed preferably {110} faces. Repeatedly a nucleus was formed in ortho‐twin position on a small {111} face which truncated the corner of three adjacent {110} faces. The repeated twin formation led to a preferred growth into the relevant 〈111〉 direction. The twinning already occurred at a low supercooling of less than 1 K and accelerated the growth distinctly.
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