Solution based synthesis of perovskite-type oxide films and powders Page: 4 of 233
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SOLUTION BASED PREPARATION OF PEROVSKITE-TYPE
OXIDE FILMS AND POWDERS
James M. McHale Jr.
Doctor of Philosophy
Temple University
January, 1995
Major Advisor: Dr. Robert E. Salomon
ABSTRACT OF DISSERTATION
Conventional solid state reactions are diffusion limited processes that require high
temperatures and long reaction times to reach completion. In this work, several solution
based methods were utilized to circumvent this diffusion limited reaction and achieve
product formation at lower temperatures. The solution methods studied all have the
common goal of trapping the homogeneity inherent in a solution and transferring this
homogeneity to the solid state, thereby creating a solid atomic mixture of reactants. These
atomic mixtures can yield solid state products through "diffusionless" mechanisms. The
effectiveness of atomic mixtures in solid state synthesis was tested on three classes of
materials, varying in complexity. A procedure was invented for obtaining the highly water
soluble salt, titanyl nitrate, TiO(NO3)2, in crystalline form, which allowed the production
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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/m1/4/: accessed July 16, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.