Structure of BiFeO3 ceramics treated with hot-pressing

W. N. Su; X. L. Wu; X. S. Wu; D. H. Wang; Y. W. Du; Paul K. Chu

doi:10.1016/j.ssc.2010.10.039

Structure of BiFeO₃ ceramics treated with hot-pressing

W. N. Su
, X. L. Wu
, X. S. Wu
, D. H. Wang
, Y. W. Du
, Paul K. Chu

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

3 Citations (Scopus)

Abstract

BiFeO₃ ceramics synthesized at high temperature and pressure is observed to possess large spontaneous polarization and magnetism. The selected-area electron diffraction patterns indicate the coexistence of polycrystalline and nanocrystalline grains in the hot-pressed samples. Raman spectroscopic studies reveal that the BiO bond strain and cations (Fe ³⁺) away from the oxygen octahedral center induce the polarization. The FeO bond strain, oxygen octahedral rotation around the [111] axis, and electromagnons build a long-range interaction between electrical polarization and magnetic moment reorientation to form an incommensurate spiral magnetic structure. This work clearly shows that the hot-pressed treatment can modify the structure and properties of BiFeO₃ ceramics. © 2010 Elsevier Ltd. All rights reserved.

Original language	English
Pages (from-to)	5-8
Journal	Solid State Communications
Volume	151
Issue number	1
DOIs	https://doi.org/10.1016/j.ssc.2010.10.039
Publication status	Published - Jan 2011

Research Keywords

A. Incommensurate spiral magnetic structure
A. Polycrystalline structure
C. Polarization
D. Raman spectra

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Cite this

@article{8d5a9c2c65b7406799be0d2c297eec69,

title = "Structure of BiFeO3 ceramics treated with hot-pressing",

abstract = "BiFeO3 ceramics synthesized at high temperature and pressure is observed to possess large spontaneous polarization and magnetism. The selected-area electron diffraction patterns indicate the coexistence of polycrystalline and nanocrystalline grains in the hot-pressed samples. Raman spectroscopic studies reveal that the BiO bond strain and cations (Fe 3+) away from the oxygen octahedral center induce the polarization. The FeO bond strain, oxygen octahedral rotation around the [111] axis, and electromagnons build a long-range interaction between electrical polarization and magnetic moment reorientation to form an incommensurate spiral magnetic structure. This work clearly shows that the hot-pressed treatment can modify the structure and properties of BiFeO3 ceramics. {\textcopyright} 2010 Elsevier Ltd. All rights reserved.",

keywords = "A. Incommensurate spiral magnetic structure, A. Polycrystalline structure, C. Polarization, D. Raman spectra",

author = "Su, \{W. N.\} and Wu, \{X. L.\} and Wu, \{X. S.\} and Wang, \{D. H.\} and Du, \{Y. W.\} and Chu, \{Paul K.\}",

year = "2011",

month = jan,

doi = "10.1016/j.ssc.2010.10.039",

language = "English",

volume = "151",

pages = "5--8",

journal = "Solid State Communications",

issn = "0038-1098",

publisher = "Elsevier Ltd.",

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TY - JOUR

T1 - Structure of BiFeO3 ceramics treated with hot-pressing

AU - Su, W. N.

AU - Wu, X. L.

AU - Wu, X. S.

AU - Wang, D. H.

AU - Du, Y. W.

AU - Chu, Paul K.

PY - 2011/1

Y1 - 2011/1

N2 - BiFeO3 ceramics synthesized at high temperature and pressure is observed to possess large spontaneous polarization and magnetism. The selected-area electron diffraction patterns indicate the coexistence of polycrystalline and nanocrystalline grains in the hot-pressed samples. Raman spectroscopic studies reveal that the BiO bond strain and cations (Fe 3+) away from the oxygen octahedral center induce the polarization. The FeO bond strain, oxygen octahedral rotation around the [111] axis, and electromagnons build a long-range interaction between electrical polarization and magnetic moment reorientation to form an incommensurate spiral magnetic structure. This work clearly shows that the hot-pressed treatment can modify the structure and properties of BiFeO3 ceramics. © 2010 Elsevier Ltd. All rights reserved.

AB - BiFeO3 ceramics synthesized at high temperature and pressure is observed to possess large spontaneous polarization and magnetism. The selected-area electron diffraction patterns indicate the coexistence of polycrystalline and nanocrystalline grains in the hot-pressed samples. Raman spectroscopic studies reveal that the BiO bond strain and cations (Fe 3+) away from the oxygen octahedral center induce the polarization. The FeO bond strain, oxygen octahedral rotation around the [111] axis, and electromagnons build a long-range interaction between electrical polarization and magnetic moment reorientation to form an incommensurate spiral magnetic structure. This work clearly shows that the hot-pressed treatment can modify the structure and properties of BiFeO3 ceramics. © 2010 Elsevier Ltd. All rights reserved.

KW - A. Incommensurate spiral magnetic structure

KW - A. Polycrystalline structure

KW - C. Polarization

KW - D. Raman spectra

UR - https://www.scopus.com/pages/publications/78649451218

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-78649451218&origin=recordpage

U2 - 10.1016/j.ssc.2010.10.039

DO - 10.1016/j.ssc.2010.10.039

M3 - RGC 21 - Publication in refereed journal

SN - 0038-1098

VL - 151

SP - 5

EP - 8

JO - Solid State Communications

JF - Solid State Communications

IS - 1

ER -