首页|Preparation of Barium Titanate Nanoparticles by Particle Growth Control
Preparation of Barium Titanate Nanoparticles by Particle Growth Control
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Trans Tech Publications Ltd
Barium titanate (BaTiO_3) nanoparticles were prepared by a two-step thermal decomposition method using barium titanyl oxalate nanoparticles of size 30 nm with and without dry-jet milling. Dry-jet milled barium titanyl oxalate nanoparticles (BTO-B) were well-dispersed whereas those without the dry-jet milling procedure (BTO-A) were partially aggregated. A heat annealing of obtained BaTiO_3 nanoparticles at the same temperature resulted in crystallite sizes of the BTO-A derived BaTiO_3 nanoparticles much smaller than those of the BTO-B derived. A mesoscopic particle structure analysis of revealed much thinner surface cubic layer thickness of the BTO-B derived BaTiO_3 nanoparticles compared with the BTO-A derived BaTiO_3 nanoparticles. This indicated the particle growth rate to be the most important parameter for the surface cubic layer thickness determination. A relationship between the surface cubic layer thickness and the particle growth rate was investigated precisely in this study.
barium titanatenanoparticlesstructure gradient layerparticle growth control
Material Science and Technology, Interdisciplinary Graduate School of Medical and Engineering, University of Yamanashi, 4-4-37 Takeda, Kofu, Yamanashi 400-8510, Japan
Department of Physical Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan
NETL
NSTL
Trans Tech Publications Ltd
