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Effect of crystallisation conditions on the shape and composition of ferroelectric crystals
Author(s) -
Mareček V.,
Novák J.
Publication year - 1970
Publication title -
kristall und technik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0023-4753
DOI - 10.1002/crat.19700050109
Subject(s) - crystallization , impurity , ferroelectricity , fluoride , materials science , composition (language) , potassium , chemical composition , chemical engineering , alkaline earth metal , mineralogy , inorganic chemistry , chemistry , dielectric , metallurgy , metal , organic chemistry , linguistics , philosophy , optoelectronics , engineering
In the present paper the effect of crystallization conditions on the habit and chemical composition of some water‐soluble ferroelectric crystals as TGS, TGFB, TGSe, KDP, RbDP, mixed LiTl‐LiNH 4 ‐tartrates and other tartrates is discussed. The influence of impurities or additives as well as different crystallisation conditions on growth and quality of crystals and additional treatment of samples for physical measurements are followed. Further, some established facts are mentioned concerning the chemical composition of perovskite type crystals of alkaline earth titanates prepared by crystallisation from molten potassium fluoride. The amount of impurities and additives is discussed. Many factors which affect the real crystallisation and which must be considered when evaluating the results of physical meausrements are reported.