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Preparation Method and Cation Dopant Effects on the Particle Size and Properties of BaCeO 3 Perovskites
Author(s) -
Cai Jun,
Laubernds Kate,
Galasso Francis S.,
Suib Steven L.,
Liu Jia,
Shen XiongFei,
Begge Eric,
Kunz H. Russell,
Fenton James M.
Publication year - 2005
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.1551-2916.2005.00521.x
Subject(s) - coprecipitation , materials science , sintering , perovskite (structure) , particle size , chemical engineering , microemulsion , economies of agglomeration , dopant , particle (ecology) , inorganic chemistry , nanoparticle , doping , mineralogy , nanotechnology , chemistry , metallurgy , pulmonary surfactant , oceanography , optoelectronics , engineering , geology
Perovskite‐type BaCeO 3 has been investigated to study the effects of preparation method and cation doping on the particle size and sintering in the fabrication of dense perovskite membranes. A variety of preparation methods including solid‐state reactions, coprecipitation, microemulsion, and molten salt reactions have been studied. In coprecipitation and microemulsion preparations, perovskites were formed at significantly lower temperatures than that required in a solid‐state preparation. The pH of the reactant solutions has been found to greatly affect the particle size and agglomeration of BaCeO 3 perovskites. Smallest perovskite particles with sizes of 40–60 nm were obtained by the microemulsion preparation with minimal agglomeration. Transition metal dopants such as neodymium and manganese cations were doped into BaCeO 3 and their effects on the particle size and agglomeration of perovskite particles investigated. Both small particle size and cation doping significantly helped the sintering of perovskites.