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ISRN Materials Science
Volume 2012 (2012), Article ID 170362, 5 pages
http://dx.doi.org/10.5402/2012/170362
Research Article

Synthesis of by the Flux Method

Department of Applied Chemistry, School of Science and Technology, Meiji University, Kanagawa 214-8571, Japan

Received 2 July 2012; Accepted 12 August 2012

Academic Editors: A. Dias and G. M. do Nascimento

Copyright © 2012 Yuki Maruyama et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

has been successfully synthesized using Bi2O3–B2O3 eutectic flux. In particular, we succeeded in synthesizing a low-temperature-phase crystal (α- ) at 1073 K as well as high-temperature-phase crystal (β- ). The morphology of α- and β- particles prepared by the flux method is a euhedral crystal. In contrast, the morphology of particles prepared by solid state reaction differs: α- is aggregated and β- is necked. Ultraviolet-visible diffuse reflectance spectra indicate that the absorption edge is at a longer wavelength for β- than for α- with β- absorbing light of wavelengths up to nearly 400 nm.