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Home  >  Journal list  >  Journal of the Ceramic Society of Japan  >  Vol.123  No.1437 (May) (2015)  >  pp.351-354

Journal of the Ceramic Society of Japan
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Microstructures of lanthanum nickel oxide particles with crystal facets synthesized in molten chlorides

Shintaro UENO1), Yasunao SAKAMOTO1), Hiroya TAGUCHI1), Kouichi NAKASHIMA1), Satoshi WADA1)
1) Graduate School Department of Interdisciplinary Research, University of Yamanashi

LaNiO3 cuboid particles were successfully synthesized by the sol–gel method in the presence of molten chlorides. The precursor gels derived from the La(NO3)3 and Ni(CH3COO)2 solution were heated with molten chloride, NaCl or KCl, above the melting point of respective molten salts. The formation reaction of LaNiO3 was completed below the melting point of these chlorides, and then crystal growth process might be facilitated in liquid phase provided by the molten chlorides due to an increase in the mass-transportation rate. The formation of the submicron to micron-sized LaNiO3 cuboid particles, which are enclosed by {100} facets of pseudocubic perovskite, is confirmed by the electron microscope observations and the electron diffraction analysis.

Lanthanum nickel oxide, Sol–gel method, Molten salts, Morphological control, Facet control, Crystal growth

Received: December 28, 2014
Accepted: February 25, 2015 , Published online: May 01, 2015



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