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The sol-gel derived pure barium titanate and zirconium doped
barium titanatepowder was prepared by using barium
2-methoxyethoxide precursors, titanium2-methoxyethoxide, and
zirconium 2-methoxyethoxide, was examined. The stableclearbrown
precursor solution was formed by mixing the 2-methoxyethoxide
with2-methoxyethanol in an appropriate ratio. The barium
titanate powder was at 130℃derived from a fully
hydrolyzedprecursor solution. The zirconium ion could be
dissoved in barium titanate atlowtemperature and its lattice
constant become larger than that of pure barium.
Thecrystallization of barium titanate become better as we
increasingof the annealtemperature Barium titanate(BaTiO3)
nanocrystalline thin film was prepared by the sol-gelprocess, in
which partially hydrolyzed 2-methoxyethoxide precursors were
used.The nanocrystalline thin film was successfully prepared by
dip coating. Theparticle size of pure barium titanate varied
from 10nm to 130nm when annealedfrom 600℃ to 900℃.
Ferroelectricity is not observed even annealed at 800℃. The
dielectric constant increased with the increasing of the
particle size andis stable (constant) with respect to the
temperature. The zirconium dopedpowder would inhibit the growth
of the particle and its dielectric constant islower than that of
pure barium titanate.
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