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Title: Structure and phase transition of BiFeO{sub 3} cubic micro-particles prepared by hydrothermal method

Abstract

Graphical abstract: Bismuth ferrite (BiFeO{sub 3}) cubic micro-particles with smooth surfaces were synthesized. BiFeO{sub 3} has a hexagonal perovskite structure with a space group R3c below 370 °C and rhombohedral perovskite structure with a space group R3m below 755 °C, undergoes a phase transition in the temperature range of 755–817 °C to a cubic structure, then decompose to liquid and Fe{sub 2}O{sub 3} above 939 °C. Highlights: ► BiFeO{sub 3} micro-particles with smooth surface were synthesized by hydrothermal method. ► BiFeO{sub 3} enjoys hexagonal structure with well element ratio and chemical valence. ► BiFeO{sub 3} transition from rhombohedral phase to cubic phase lasts 60 °C. -- Abstract: Single-phase bismuth ferrite (BiFeO{sub 3}) powders were synthesized with a hydrothermal method by controlling the experimental conditions carefully. The powder structure, morphology and composition were characterized by using X-ray diffraction (XRD), scanning electron microscopy, transmission electron microscope, Raman measurement and X-ray photoelectron spectroscopy. The particles change from irregular agglomerations to regular cubes with increasing KOH concentration. The large BiFeO{sub 3} cubic particles enjoy much smooth surfaces with well-matched element ratio (Bi:Fe:O = 1:1:3) and chemical valence (Bi{sup 3+}, Fe{sup 3+} and O{sup 2−}). The high temperature XRD and differential scanning calorimetry show thatmore » BiFeO{sub 3} powders have a hexagonal perovskite structure with a space group R3c below 370 °C and a rhombohedral structure with a space group R3m below 755 °C. BiFeO{sub 3} undergoes a phase transition in the temperature range of 755–817 °C from rhombohedral structure to a cubic phase, then decomposes to liquid and Fe{sub 2}O{sub 3} above 939 °C.« less

Authors:
 [1]; ; ;  [1];  [2]
  1. College of Physics and Information Technology, Shaanxi Normal University, Xi’an 710062 (China)
  2. Department of Electronic Science, Guizhou University, Guizhou Guiyang 550025 (China)
Publication Date:
OSTI Identifier:
22215603
Resource Type:
Journal Article
Journal Name:
Materials Research Bulletin
Additional Journal Information:
Journal Volume: 47; Journal Issue: 11; Other Information: Copyright (c) 2012 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0025-5408
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; BISMUTH; BISMUTH IONS; CALORIMETRY; FERRITE; FERRITES; HYDROTHERMAL SYNTHESIS; IRON IONS; IRON OXIDES; LIQUIDS; PEROVSKITE; POWDERS; RAMAN SPECTROSCOPY; SCANNING ELECTRON MICROSCOPY; SPACE GROUPS; SURFACES; TRANSMISSION ELECTRON MICROSCOPY; TRIGONAL LATTICES; X-RAY DIFFRACTION; X-RAY PHOTOELECTRON SPECTROSCOPY

Citation Formats

Zhou, Jian-Ping, E-mail: zhoujp@snnu.edu.cn, Yang, Ruo-Lin, Xiao, Rui-Juan, Chen, Xiao-Ming, and Deng, Chao-Yong. Structure and phase transition of BiFeO{sub 3} cubic micro-particles prepared by hydrothermal method. United States: N. p., 2012. Web. doi:10.1016/J.MATERRESBULL.2012.06.050.
Zhou, Jian-Ping, E-mail: zhoujp@snnu.edu.cn, Yang, Ruo-Lin, Xiao, Rui-Juan, Chen, Xiao-Ming, & Deng, Chao-Yong. Structure and phase transition of BiFeO{sub 3} cubic micro-particles prepared by hydrothermal method. United States. doi:10.1016/J.MATERRESBULL.2012.06.050.
Zhou, Jian-Ping, E-mail: zhoujp@snnu.edu.cn, Yang, Ruo-Lin, Xiao, Rui-Juan, Chen, Xiao-Ming, and Deng, Chao-Yong. Thu . "Structure and phase transition of BiFeO{sub 3} cubic micro-particles prepared by hydrothermal method". United States. doi:10.1016/J.MATERRESBULL.2012.06.050.
@article{osti_22215603,
title = {Structure and phase transition of BiFeO{sub 3} cubic micro-particles prepared by hydrothermal method},
author = {Zhou, Jian-Ping, E-mail: zhoujp@snnu.edu.cn and Yang, Ruo-Lin and Xiao, Rui-Juan and Chen, Xiao-Ming and Deng, Chao-Yong},
abstractNote = {Graphical abstract: Bismuth ferrite (BiFeO{sub 3}) cubic micro-particles with smooth surfaces were synthesized. BiFeO{sub 3} has a hexagonal perovskite structure with a space group R3c below 370 °C and rhombohedral perovskite structure with a space group R3m below 755 °C, undergoes a phase transition in the temperature range of 755–817 °C to a cubic structure, then decompose to liquid and Fe{sub 2}O{sub 3} above 939 °C. Highlights: ► BiFeO{sub 3} micro-particles with smooth surface were synthesized by hydrothermal method. ► BiFeO{sub 3} enjoys hexagonal structure with well element ratio and chemical valence. ► BiFeO{sub 3} transition from rhombohedral phase to cubic phase lasts 60 °C. -- Abstract: Single-phase bismuth ferrite (BiFeO{sub 3}) powders were synthesized with a hydrothermal method by controlling the experimental conditions carefully. The powder structure, morphology and composition were characterized by using X-ray diffraction (XRD), scanning electron microscopy, transmission electron microscope, Raman measurement and X-ray photoelectron spectroscopy. The particles change from irregular agglomerations to regular cubes with increasing KOH concentration. The large BiFeO{sub 3} cubic particles enjoy much smooth surfaces with well-matched element ratio (Bi:Fe:O = 1:1:3) and chemical valence (Bi{sup 3+}, Fe{sup 3+} and O{sup 2−}). The high temperature XRD and differential scanning calorimetry show that BiFeO{sub 3} powders have a hexagonal perovskite structure with a space group R3c below 370 °C and a rhombohedral structure with a space group R3m below 755 °C. BiFeO{sub 3} undergoes a phase transition in the temperature range of 755–817 °C from rhombohedral structure to a cubic phase, then decomposes to liquid and Fe{sub 2}O{sub 3} above 939 °C.},
doi = {10.1016/J.MATERRESBULL.2012.06.050},
journal = {Materials Research Bulletin},
issn = {0025-5408},
number = 11,
volume = 47,
place = {United States},
year = {2012},
month = {11}
}