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Controlled double-jet precipitation of uniform colloidal crystalline particles of Zr- and Sr-doped barium titanates

Published online by Cambridge University Press:  31 January 2011

Yie-Shein Her ,
Egon Matijević  and
Min Che Chon
Yie-Shein Her
Affiliation:
Center for Advanced Materials Processing, Clarkson University, Box 5814, Potsdam, New York 13699–5814
Egon Matijević
Affiliation:
Center for Advanced Materials Processing, Clarkson University, Box 5814, Potsdam, New York 13699–5814
Min Che Chon
Affiliation:
Chon International, 128–27 Tangju–dong, Chongno–ku, Seoul 110–071, Korea
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Abstract

The synthesis of uniform colloidal crystalline particles of Zr- and Sr-doped barium titanates at a low temperature of 85 °C by the controlled double-jet precipitation (CDJP) technique is described. The stoichiometry of the powders can be precisely controlled by adjusting the compositions of the starting reactant solutions. Barium titanate with 20% Zr substitution, sintered at 1275 °C, satisfied the requirements for the Y5V multilayer capacitors application. The grain sizes are uniform and small, ranging from 1 to 3 μm. Solids with an extremely sharp change in the dielectric constant as a function of temperature, which are suitable for thermal IR detectors application, can be obtained when both Sr and Zr are incorporated as dopants.

Type
Articles
Information
Journal of Materials Research , Volume 11 , Issue 12 , December 1996 , pp. 3121 - 3127
Copyright
Copyright © Materials Research Society 1996

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