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Preparation of a Monodispersed Suspension of Barium Titanate Nanoparticles and Electrophoretic Deposition of Thin Films
Author(s) -
Li Juan,
Wu Yong Jun,
Tanaka Hidetaro,
Yamamoto Takahisa,
Kuwabara Makoto
Publication year - 2004
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.1551-2916.2004.01578.x
Subject(s) - materials science , nanocrystalline material , barium titanate , nanoparticle , transmission electron microscopy , chemical engineering , electrophoretic deposition , thin film , suspension (topology) , nanostructure , perovskite (structure) , titanate , sol gel , nanocrystal , nanotechnology , analytical chemistry (journal) , ceramic , composite material , chromatography , chemistry , coating , mathematics , homotopy , pure mathematics , engineering
A transparent and stable monodispersed suspension of nanocrystalline barium titanate was prepared by dispersing a piece of BaTiO 3 gel into a mixed solvent of 2‐methoxyethanol and acethylacetone. The results of high‐resolution transmission electron microscopy (HR‐TEM) and size analyzer confirmed that the BaTiO 3 nanoparticles in the suspension had an average size of ∼10 nm with a narrow size distribution. Crystal structure characterization via TEM and X‐ray diffraction indicated BaTiO 3 nanocrystallites to be a perovskite cubic phase. BaTiO 3 thin films of controlled thickness from 100 nm to several micrometers were electrophoretic deposited compactly on Pt/Ti/SiO 2 /Si substrates. The deposited thin film had uniform nanostructure with a very smooth surface.