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Phase Equilibria in the System BaTiO 3 —CaTiO 3
Author(s) -
DeVRIES R. C.,
ROY R.
Publication year - 1955
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1955.tb14918.x
Subject(s) - tetragonal crystal system , solid solution , hexagonal crystal system , materials science , mineralogy , phase (matter) , trigonal crystal system , analytical chemistry (journal) , crystallography , crystal structure , chemistry , metallurgy , organic chemistry , chromatography
The system BaTiO 3 –CaTiO 3 was investigated from room temperature to 1900°C. by several different techniques. The system is characterized by extensive solid solution with a minimum at 18 wt.% CaTiO 3 . The extent of solid solution decreases rapidly with temperature from a maximum of approximately 30 wt.% in each end member at 1595°C. The temperature of the cubic‐hexagonal inversion in BaTiO 3 is raised very rapidly with additions of CaTiO 3 . The tetragonal‐cubic inversion in BaTiO 3 is lowered slightly to a minimum of 105°C. by the additions of CaTiO 3 . Within a wide composition region crystals of cubic BaTiO 3 solid solution may be grown directly from the melt, and at the minimum from a melt of the same composition.