Ammonothermal Preparation of Barium Zirconate Fine Powders

S. Wannapaiboon; A. Rujiwatra

doi:10.4028/www.scientific.net/AMR.55-57.85

Paper Titles

Dielectric and Piezoelectric Properties of B₂O₃ and SnO₂ Doped Barium Titanate Ceramics
p.69

Ferroelectricity of (1-x)(Bi_0.5Na_0.5)TiO₃– xBa(Ti_0.95Zr_0.05)O₃ Solid Solution Ceramics
p.73

Effect of Calcination Temperature on Phase and Morphology of Sol-Gel Derived PZTN Powders
p.77

BaMnTiO₃Synthesized by the Oxalate and Impregnation Methods
p.81

Ammonothermal Preparation of Barium Zirconate Fine Powders
p.85

Effect of Al₂O₃Addition on Dielectric, Piezoelectric and Ferroelectric Properties of 0.2Pb(Zn_1/3Nb_2/3)O₃–0.8Pb(Zr_1/2Ti_1/2)O₃ Ceramics
p.89

Microstuctural Study and Properties of 0.8PZT-0.2BT Ceramics Using a Two-Stage Sintering Procedure
p.93

Effects of Manganese Addition on Phase Formation, Microstructure and Electrical Properties of Barium Titanate Ceramics
p.97

Induced Internal Bubble Shapes Affected Piezoelectric Behaviors of PVDF Films
p.101

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Ammonothermal Preparation of Barium Zirconate Fine Powders

Abstract:

Barium zirconate fine powders of pure cubic phase were readily prepared from the reactions between BaCl22H2O and ZrOCl28H2O under ammonothermal conditions at a very low temperature of 130oC as the lowest. KOH concentration was important in determining phase formation and particle morphology. Reaction temperature and time showed influences on the evolution of particle morphology and aggregation formation, respectively. Sizes of the primary particles critically depended on the BaII:ZrIV mole ratio. Phase formation mechanism is suggested.