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) (KAR id:40384)

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.
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
Institutional Unit:	Schools > School of Engineering, Mathematics and Physics > Physics and Astronomy
Former Institutional Unit:	Divisions > Division of Natural Sciences > Physics and Astronomy
Depositing User:	Stewart Brownrigg
Date Deposited:	07 Mar 2014 00:05 UTC
Last Modified:	20 May 2025 09:35 UTC
Resource URI:	https://kar.kent.ac.uk/id/eprint/40384 (The current URI for this page, for reference purposes)

University of Kent Author Information

Arnold, Donna C..

Creator's ORCID:	https://orcid.org/0000-0003-0239-5790
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