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Effect of Composition and Size of Crystallite on Crystal Phase in Lead Barium Titanate
Author(s) -
Saegusa Kunio,
Rhine Wendell E.,
Bowen H. Kent
Publication year - 1993
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.1151-2916.1993.tb03932.x
Subject(s) - barium titanate , tetragonal crystal system , crystallite , materials science , calcination , barium , oxalate , particle size , lead titanate , grain size , phase (matter) , mineralogy , ammonium oxalate , inorganic chemistry , chemical engineering , ferroelectricity , crystal structure , crystallography , ceramic , chemistry , metallurgy , dielectric , organic chemistry , optoelectronics , engineering , catalysis
Lead titanate, barium titanate, and lead barium titanate powders (>99.9% pure), the particle size of which varied from 0.03 to 0.15 μm depending on the calcination temperature and the composition, was prepared from barium lead titanyl oxalate, which was previously prepared by reacting high‐purity ammonium titanyl oxalate with barium and lead acetate. The critical crystallite size of BaTiO 3 powder from the cubic to the tetragonal phase is around 1 μm. Pb 0.3 Ba 0.7 TiO 3 powder with an average size of 0.057 μm showed the tetragonal phase.