Solution based synthesis of perovskite-type oxide films and powders Page: 5 of 233
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of titanate materials by freeze drying. The freeze drying procedures yielded phase pure,
nanocrystalline BaTiO3 and the complete SYNROC-B phase assemblage after ten minute
heat treatments at 600* C and 11000 C, respectively. Two novel methods were developed
for the solution based synthesis of Ba2YCu307.. and Bi2Sr2Ca2Cu3O1o. Thin and thick films
of Ba2YCu3O7.X and Bi2Sr2Ca2Cu3O1o were synthesized by an atmospheric pressure,
chemical vapor deposition technique. Liquid ammonia solutions of metal nitrates were
atomized with a stream ofN2O and ignited with a hydrogen/oxygen torch. The resulting
flame was used to coat a substrate with superconducting material. Bulk powders of
Ba2YCu307.,, and Bi2Sr2Ca2Cu3O10 were synthesized through a novel acetate glass method.
The materials prepared were characterized by XRD, TEM, SEM, TGA, DTA, magnetic
susceptibility and electrical resistivity measurements.iv
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McHale, J. M. Jr. Solution based synthesis of perovskite-type oxide films and powders, thesis or dissertation, January 1, 1995; New Mexico. (https://digital.library.unt.edu/ark:/67531/metadc1272084/m1/5/: accessed July 16, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.