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Preparation of Nanocrystalline BaTiO 3 Powders, Fibers, and Thin Films From the Same Precursor Solution
Author(s) -
Das Rabindra N.,
Pramanik P.
Publication year - 2010
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.1551-2916.2010.03644.x
Subject(s) - materials science , nanocrystalline material , aqueous solution , sol gel , calcination , chemical engineering , scanning electron microscope , fiber , transmission electron microscopy , titanium , thin film , composite material , nanotechnology , organic chemistry , metallurgy , chemistry , engineering , catalysis
This paper discusses a modified sol–gel process, which can prepare nanocrystalline BaTiO 3 powders, fibers, and thin films. This process involved the preparation of stable precursor solutions containing the respective aqueous acetate solution of barium acetate and titanium isopropoxide where barium acetate and titanium isopropoxides were used as precursors and aqueous acetic acid was used as a solvent. The gel prepared using this precursor solution was calcined at 550°C/2 h to produce nanocrystalline BaTiO 3 with the corresponding average X‐ray particle size of ∼15 nm. In case of thin film, precursor solution was directly deposited on silicon or glass substrates by spin coating. Nanocrystalline BaTiO 3 powders were dispersed into the precursor solution to produce a thick, crack‐free particle film. We have also prepared BaTiO 3 fibers by soaking plant fiber (Jute) in the precursor solution. Heat treatment of soaked and dried plant fiber produces BaTiO 3 fibers. Particle, fiber, and film surfaces were characterized by transmission electron micrograph and scanning electron micrograph analysis. Altogether, this is a new direction for the development of multiple structures from the same precursor solution.