Ferroelectric-Paraelectric Transition in BiFeO3: Crystal Structure of the Orthorhombic β Phase

Donna Claire Arnold; Kevin S. Knight; Finlay D. Morrison; Philip Lightfoot

doi:10.1103/PhysRevLett.102.027602

Ferroelectric-Paraelectric Transition in BiFeO₃: Crystal Structure of the Orthorhombic β Phase

Donna Claire Arnold, Kevin S. Knight, Finlay D. Morrison, Philip Lightfoot

Research output: Contribution to journal › Article › peer-review

Abstract

A detailed investigation using variable temperature powder neutron diffraction demonstrates that BiFeO3 undergoes a phase transition from the ferroelectric alpha phase (rhombohedral, R3c) to a paraelectric beta phase (orthorhombic, Pbnm) between 820 degrees C and 830 degrees C. Coexistence of both phases over a finite temperature interval, together with abrupt changes in key structural parameters, confirms that the transition is first order. The beta phase corresponds to a GdFeO3-type perovskite structure.

Original language	English
Article number	027602
Number of pages	4
Journal	Physical Review Letters
Volume	102
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevLett.102.027602
Publication status	Published - 16 Jan 2009

Keywords

POLYCRYSTALLINE BIFEO3
NEUTRON-DIFFRACTION
MAGNETIC-PROPERTIES
TEMPERATURE
MULTIFERROICS

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10.1103/PhysRevLett.102.027602

Cite this

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title = "Ferroelectric-Paraelectric Transition in BiFeO3: Crystal Structure of the Orthorhombic β Phase",

abstract = "A detailed investigation using variable temperature powder neutron diffraction demonstrates that BiFeO3 undergoes a phase transition from the ferroelectric alpha phase (rhombohedral, R3c) to a paraelectric beta phase (orthorhombic, Pbnm) between 820 degrees C and 830 degrees C. Coexistence of both phases over a finite temperature interval, together with abrupt changes in key structural parameters, confirms that the transition is first order. The beta phase corresponds to a GdFeO3-type perovskite structure.",

keywords = "POLYCRYSTALLINE BIFEO3, NEUTRON-DIFFRACTION, MAGNETIC-PROPERTIES, TEMPERATURE, MULTIFERROICS",

author = "Arnold, {Donna Claire} and Knight, {Kevin S.} and Morrison, {Finlay D.} and Philip Lightfoot",

year = "2009",

month = jan,

day = "16",

doi = "10.1103/PhysRevLett.102.027602",

language = "English",

volume = "102",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

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T1 - Ferroelectric-Paraelectric Transition in BiFeO3

T2 - Crystal Structure of the Orthorhombic β Phase

AU - Arnold, Donna Claire

AU - Knight, Kevin S.

AU - Morrison, Finlay D.

AU - Lightfoot, Philip

PY - 2009/1/16

Y1 - 2009/1/16

N2 - A detailed investigation using variable temperature powder neutron diffraction demonstrates that BiFeO3 undergoes a phase transition from the ferroelectric alpha phase (rhombohedral, R3c) to a paraelectric beta phase (orthorhombic, Pbnm) between 820 degrees C and 830 degrees C. Coexistence of both phases over a finite temperature interval, together with abrupt changes in key structural parameters, confirms that the transition is first order. The beta phase corresponds to a GdFeO3-type perovskite structure.

AB - A detailed investigation using variable temperature powder neutron diffraction demonstrates that BiFeO3 undergoes a phase transition from the ferroelectric alpha phase (rhombohedral, R3c) to a paraelectric beta phase (orthorhombic, Pbnm) between 820 degrees C and 830 degrees C. Coexistence of both phases over a finite temperature interval, together with abrupt changes in key structural parameters, confirms that the transition is first order. The beta phase corresponds to a GdFeO3-type perovskite structure.

KW - POLYCRYSTALLINE BIFEO3

KW - NEUTRON-DIFFRACTION

KW - MAGNETIC-PROPERTIES

KW - TEMPERATURE

KW - MULTIFERROICS

UR - http://link.aps.org/doi/10.1103/PhysRevLett.102.027602

U2 - 10.1103/PhysRevLett.102.027602

DO - 10.1103/PhysRevLett.102.027602

M3 - Article

SN - 0031-9007

VL - 102

JO - Physical Review Letters

JF - Physical Review Letters

IS - 2

M1 - 027602

ER -

Ferroelectric-Paraelectric Transition in BiFeO₃: Crystal Structure of the Orthorhombic β Phase

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

RS Fellowship ext to XGLR49: F Morrison Fellowship

Magnetoelectricity & Multiferroic 4133/1: Magnetoelectricity and Multiferroic Behaviour in Tungsten Bronze Oxides

The β-to-γ Transition in BiFeO₃: A Powder Neutron Diffraction Study

Cite this

Ferroelectric-Paraelectric Transition in BiFeO3: Crystal Structure of the Orthorhombic β Phase

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Projects

RS Fellowship ext to XGLR49: F Morrison Fellowship

Magnetoelectricity & Multiferroic 4133/1: Magnetoelectricity and Multiferroic Behaviour in Tungsten Bronze Oxides

Research output

The β-to-γ Transition in BiFeO3: A Powder Neutron Diffraction Study

Cite this

Ferroelectric-Paraelectric Transition in BiFeO₃: Crystal Structure of the Orthorhombic β Phase

The β-to-γ Transition in BiFeO₃: A Powder Neutron Diffraction Study