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http://dx.doi.org/10.12925/jkocs.2007.24.3.5

Synthesis of Barium Titanate Spherical Particles by Sol-Gel Method  

Kim, Yong-Ryul (Department of Chemical Engineerign, Daejin University)
Publication Information
Journal of the Korean Applied Science and Technology / v.24, no.3, 2007 , pp. 246-252 More about this Journal
Abstract
$BaTiO_3$ powders were prepared by sol-gel method from different concentration of KOH aqueous solution and Ba/Ti molar ratio. Particle shape, size and crystal structure of prepared $BaTiO_3$ powders were analyzed by SEM, XRD, and FT-IR. As the result of KOH concentration changing, spherical particles were obtained by condition more than 3 M and particle size decreased as concentration increasing. Different appearance showed between dried and sintered powders against changing of Ba/Ti molar ratio. In case of dried powders, the crystallinity decreased as molar ratio increasing. On the other hand, increased as molar ratio increasing in case of sintered powders.
Keywords
$BaTiO_3$; Sol-Gel; Ba/Ti molar ratio;
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