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http://dx.doi.org/10.4191/KCERS.2002.39.11.1017

(Ba1-xCax)(Ti1-yZry)O3 Powder Synthesis Via Hydrothermal Treatment  

Park, Byung-Hyun (Korea Institute of Ceramic Engineering and Technology)
Choi, Kyoon (Korea Institute of Ceramic Engineering and Technology)
Choi, Eui-Seok (Korea Institute of Ceramic Engineering and Technology)
Kim, Jong-Hee (Samsung Electro-Mechanics)
Publication Information
Journal of the Korean Ceramic Society / v.39, no.11, 2002 , pp. 1017-1022 More about this Journal
Abstract
$(Ba_{1-x}Ca_x)(Ti_{1-y}Zr_y)O_3(BCTZ)$ powders for the Ni-electrode Multilayer Ceramic Capacitor(MLCC) were synthesized via hydrothermal treatment using mixed aqueous solutions of $BaCl_2{\cdot}2H_2O,\Ca(NO_3)2{\cdot}4H_2O,\ ZrOCl_2{\cdot}8H_2O$ and $TiCl_4$. Two component and three component systems were also extensively studied for basic data. BT, CT and BZ powders were crystalline but CZ was determined to be amorphous under the same synthetic condition. In BTZ system, Zr and Ti were completely soluble and Ca would be substituted for Ba up to ∼6 mol% in BCT. The submicron-sized $(Ba_{0.95}Ca_{0.05})(Ti_{0.80}Zr_{0.20})O_3$ powder of the target composition was successfully synthesized at $150{\circ}$ for 12h.
Keywords
$BaTiO_3$; Powder synthesis; Hydrothermal treatment; MLCC;
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