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The ??to?? Transition in BiFeO3: A Powder Neutron Diffraction Study

Arnold, Donna C., Knight, Kevin S., Catalan, Gustau, Redfern, Simon A. T., Scott, James, Lightfoot, Philip, Morrison, Finlay D. (2010) The ??to?? Transition in BiFeO3: A Powder Neutron Diffraction Study. Advanced Functional Materials, 20 (13). pp. 2116-2123. ISSN 1616-3028. (doi:10.1002/adfm.201000118) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

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Official URL
http://dx.doi.org/10.1002/adfm.201000118

Abstract

High-temperature powder neutron diffraction experiments are conducted around the reported ?–? phase transition (?930?°C) in BiFeO3. The results demonstrate that while a small volume contraction is observed at the transition temperature, consistent with an insulator–metal transition, both the ?- and ?-phase of BiFeO3 exhibit orthorhombic symmetry; i.e., no further increase of symmetry occurs during this transition. The ?-orthorhombic phase is observed to persist up to a temperature of approximately 950?°C before complete decomposition into Bi2Fe4O9 (and liquid Bi2O3), which subsequently begins to decompose at approximately 960?°C.

Item Type: Article
DOI/Identification number: 10.1002/adfm.201000118
Uncontrolled keywords: Ferroics; Structure–Property Relationships
Subjects: Q Science > QC Physics > QC176 Solid state physics
Q Science > QC Physics
Divisions: Faculties > Sciences > School of Physical Sciences
Faculties > Sciences > School of Physical Sciences > Functional Materials Group
Depositing User: Stewart Brownrigg
Date Deposited: 07 Mar 2014 00:05 UTC
Last Modified: 29 May 2019 12:24 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/40384 (The current URI for this page, for reference purposes)
Arnold, Donna C.: https://orcid.org/0000-0003-0239-5790
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