Multiferroic phase transition near room temperature in BiFeO3 films

I. C. Infante; J. Juraszek; S. Fusil; B. Dupé; P. Gemeiner; O. Diéguez; F. Pailloux; S. Jouen; E. Jacquet; G. Geneste; J. Pacaud; J. Íñiguez; L. Bellaiche; A. Barthélémy; B. Dkhil; M. Bibes

doi:10.1103/PhysRevLett.107.237601

Multiferroic phase transition near room temperature in BiFeO₃ films

I. C. Infante^*, J. Juraszek, S. Fusil, B. Dupé, P. Gemeiner, O. Diéguez, F. Pailloux, S. Jouen, E. Jacquet, G. Geneste, J. Pacaud, J. Íñiguez, L. Bellaiche, A. Barthélémy, B. Dkhil, M. Bibes

^*Corresponding author for this work

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

91 Scopus citations

Abstract

In multiferroic BiFeO₃ thin films grown on highly mismatched LaAlO₃ substrates, we reveal the coexistence of two differently distorted polymorphs that leads to striking features in the temperature dependence of the structural and multiferroic properties. Notably, the highly distorted phase quasiconcomitantly presents an abrupt structural change, transforms from a standard to a nonconventional ferroelectric, and transitions from antiferromagnetic to paramagnetic at 360±20K. These coupled ferroic transitions just above room temperature hold promises of giant piezoelectric, magnetoelectric, and piezomagnetic responses, with potential in many applications fields.

Original language	English
Article number	237601
Journal	Physical Review Letters
Volume	107
Issue number	23
DOIs	https://doi.org/10.1103/PhysRevLett.107.237601
State	Published - 30 Nov 2011
Externally published	Yes

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Infante, I. C., Juraszek, J., Fusil, S., Dupé, B., Gemeiner, P., Diéguez, O., Pailloux, F., Jouen, S., Jacquet, E., Geneste, G., Pacaud, J., Íñiguez, J., Bellaiche, L., Barthélémy, A., Dkhil, B., & Bibes, M. (2011). Multiferroic phase transition near room temperature in BiFeO₃ films. Physical Review Letters, 107(23), Article 237601. https://doi.org/10.1103/PhysRevLett.107.237601

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abstract = "In multiferroic BiFeO3 thin films grown on highly mismatched LaAlO3 substrates, we reveal the coexistence of two differently distorted polymorphs that leads to striking features in the temperature dependence of the structural and multiferroic properties. Notably, the highly distorted phase quasiconcomitantly presents an abrupt structural change, transforms from a standard to a nonconventional ferroelectric, and transitions from antiferromagnetic to paramagnetic at 360±20K. These coupled ferroic transitions just above room temperature hold promises of giant piezoelectric, magnetoelectric, and piezomagnetic responses, with potential in many applications fields.",

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AU - Juraszek, J.

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AU - Dupé, B.

AU - Gemeiner, P.

AU - Diéguez, O.

AU - Pailloux, F.

AU - Jouen, S.

AU - Jacquet, E.

AU - Geneste, G.

AU - Pacaud, J.

AU - Íñiguez, J.

AU - Bellaiche, L.

AU - Barthélémy, A.

AU - Dkhil, B.

AU - Bibes, M.

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AB - In multiferroic BiFeO3 thin films grown on highly mismatched LaAlO3 substrates, we reveal the coexistence of two differently distorted polymorphs that leads to striking features in the temperature dependence of the structural and multiferroic properties. Notably, the highly distorted phase quasiconcomitantly presents an abrupt structural change, transforms from a standard to a nonconventional ferroelectric, and transitions from antiferromagnetic to paramagnetic at 360±20K. These coupled ferroic transitions just above room temperature hold promises of giant piezoelectric, magnetoelectric, and piezomagnetic responses, with potential in many applications fields.

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Multiferroic phase transition near room temperature in BiFeO₃ films

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