Journal
JOURNAL OF CRYSTAL GROWTH
Volume 291, Issue 1, Pages 135-139Publisher
ELSEVIER
DOI: 10.1016/j.jcrysgro.2006.02.048
Keywords
hydrothermal crystal growth; bismuth ferrite crystallite; pure perovskite; multiferroics
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A low-temperature hydrothermal synthesis route was utilized to fabricate single-phase BiFeO3 (BFO) crystallites. Effects of the initial KOH concentration, reaction temperature and duration time on the phase evolution, the particle size and morphologies of BFO crystallites were systematically investigated. X-ray diffraction results indicated that perovskite 13170 crystallites have been synthesized at the temperature of 200 degrees C using the KOH concentration of 4 M. Scanning electron microscopy observation revealed a homogeneous size distribution of submicron BFO powders. The ferroelectric Curie temperature of our hydrothermal BFO crystallites was determined to be 825 degrees C by differential thermal analysis. The hydrothermal reactions to form crystalline BFO powders were discussed based on the dissolution-crystallization process. (c) 2006 Elsevier B.V. All rights reserved.
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