Control of crystal phase and morphology in hydrothermal synthesis of BiFeO sub(3) crystal

Bismuth ferrite crystal is synthesized by hydrothermal method. The effect of hydrothermal temperature, KOH concentration, supersaturation, cooling rate, and compactedness on the crystal phase and the morphology of product were investigated. The results indicated that BiFeO sub(3) microcrystalline wi...

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Published inJournal of crystal growth Vol. 437; pp. 42 - 48
Main Authors Xu, Xuqing, Xu, Qianrui, Huang, Yajun, Hu, Xiuxiu, Huang, Yuqing, Wang, Gaoyu, Hu, Xiaolin, Zhuang, Naifeng
Format Journal Article
LanguageEnglish
Published 01.03.2016
Subjects
Bismuth
Cooling rate
Crystal growth
Crystals
Ferrite
Morphology
Optimization
Supersaturation
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Summary:Bismuth ferrite crystal is synthesized by hydrothermal method. The effect of hydrothermal temperature, KOH concentration, supersaturation, cooling rate, and compactedness on the crystal phase and the morphology of product were investigated. The results indicated that BiFeO sub(3) microcrystalline with good quality could been synthesized at 140-240 degree C with KOH concentration of 4-14 mol L super(-1). In addition, it is favorable for improving the crystal quality to reduce the supersaturation and decrease the cooling rate. With the increasing of the compactedness, surface holes and cracks of the as-grown crystals would be reduced. The optimization of hydrothermal condition provides guidance to grow BiFeO sub(3) crystal with a large size and high quality for practical application.
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ISSN:0022-0248
DOI:10.1016/j.jcrysgro.2015.12.015