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Home  >  Journal list  >  Journal of the Ceramic Society of Japan  >  Vol.118  No.1380 (August) (2010)  >  pp.738-740

Journal of the Ceramic Society of Japan
<<Previous article Vol.118  No.1380 (August) (2010)   pp.738 - 740 Next article>>

Low temperature synthesis of tetragonal BaTiO3 by using molten salt

Nobuhiro KUMADA1), Hideyuki OGISO1), Satoshi WADA1), Yoshinori YONESAKI1), Takahiro TAKEI1), Nobukazu KINOMURA1), Takashi IIJIMA2) and Takayuki WATANABE3)
1) Department of Research Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi
2) Research Center for Hydrogen Industrial Use and Storage, National Institute of Advanced Industrial Science and Technology
3) Core Technology Development Headquarters, CANON INC.

  Tetragonal BaTiO3 was prepared by reaction of a layered K2Ti2O5 and mixed barium salts (BaCl2 + Ba(NO3)2) at above 700°C. The morphology of the particle was cubic shape and the particle size of the products prepared at 700–1000°C was ∼10 µm, and that of the products prepared at higher temperatures (1100–1200°C) was smaller than that of the products prepared at 700–1000°C. From the chemical analysis no potassium atom was detected and the Ba/Ti ratio in the tetragonal BaTiO3 was 1.00. In the cubic particle of the tetragonal BaTiO3 surface 90° domain boundaries were observed. Lattice parameters and Curie temperature of the tetragonal BaTiO3 were a = 3.995(1) and c = 4.036(1) Å and 130°C, respectively.

Tetragonal BaTiO3, Molten salt synthesis, Layered titanate

Received: March 24, 2010
Accepted: July 15, 2010 , Published online: August 01, 2010
Copyright (c) 2010 The Ceramic Society of Japan



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