Magnetic structure of epitaxial multiferroic BiFeO3 films with engineered ferroelectric domains

X. Ke; P. P. Zhang; S. H. Baek; J. Zarestky; W. Tian; C. B. Eom

doi:10.1103/PhysRevB.82.134448

Magnetic structure of epitaxial multiferroic BiFeO₃ films with engineered ferroelectric domains

X. Ke, P. P. Zhang, S. H. Baek, J. Zarestky, W. Tian, C. B. Eom

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

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Abstract

We report on neutron scattering and piezoresponse force microscopy studies of multiferroic BiFeO₃ films epitaxially grown on vicinal SrTiO3 substrates. We find that these BiFeO₃ films exhibit a G-type antiferromagnetic structure modulated with cycloidal spiral magnetic ordering with the features of magnetic domains depending upon the ferroelectric domain states: a single antiferromagnetic domain for the films with a ferroelectric monodomain while two- or multiantiferromagnetic domains existing in the films displaying two- or four-ferroelectric variants, respectively. These results imply the correlation between ferroelectric and magnetic order parameters in the BiFeO₃ films and the expected strong magnetoelectric coupling makes these multiferroic films promising candidates for device applications with the capability to tune the magnetism using an electric field.

Original language	English
Article number	134448
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	82
Issue number	13
DOIs	https://doi.org/10.1103/PhysRevB.82.134448
State	Published - Oct 29 2010
Externally published	Yes

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title = "Magnetic structure of epitaxial multiferroic BiFeO3 films with engineered ferroelectric domains",

abstract = "We report on neutron scattering and piezoresponse force microscopy studies of multiferroic BiFeO3 films epitaxially grown on vicinal SrTiO3 substrates. We find that these BiFeO3 films exhibit a G-type antiferromagnetic structure modulated with cycloidal spiral magnetic ordering with the features of magnetic domains depending upon the ferroelectric domain states: a single antiferromagnetic domain for the films with a ferroelectric monodomain while two- or multiantiferromagnetic domains existing in the films displaying two- or four-ferroelectric variants, respectively. These results imply the correlation between ferroelectric and magnetic order parameters in the BiFeO3 films and the expected strong magnetoelectric coupling makes these multiferroic films promising candidates for device applications with the capability to tune the magnetism using an electric field.",

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AU - Ke, X.

AU - Zhang, P. P.

AU - Baek, S. H.

AU - Zarestky, J.

AU - Tian, W.

AU - Eom, C. B.

PY - 2010/10/29

Y1 - 2010/10/29

N2 - We report on neutron scattering and piezoresponse force microscopy studies of multiferroic BiFeO3 films epitaxially grown on vicinal SrTiO3 substrates. We find that these BiFeO3 films exhibit a G-type antiferromagnetic structure modulated with cycloidal spiral magnetic ordering with the features of magnetic domains depending upon the ferroelectric domain states: a single antiferromagnetic domain for the films with a ferroelectric monodomain while two- or multiantiferromagnetic domains existing in the films displaying two- or four-ferroelectric variants, respectively. These results imply the correlation between ferroelectric and magnetic order parameters in the BiFeO3 films and the expected strong magnetoelectric coupling makes these multiferroic films promising candidates for device applications with the capability to tune the magnetism using an electric field.

AB - We report on neutron scattering and piezoresponse force microscopy studies of multiferroic BiFeO3 films epitaxially grown on vicinal SrTiO3 substrates. We find that these BiFeO3 films exhibit a G-type antiferromagnetic structure modulated with cycloidal spiral magnetic ordering with the features of magnetic domains depending upon the ferroelectric domain states: a single antiferromagnetic domain for the films with a ferroelectric monodomain while two- or multiantiferromagnetic domains existing in the films displaying two- or four-ferroelectric variants, respectively. These results imply the correlation between ferroelectric and magnetic order parameters in the BiFeO3 films and the expected strong magnetoelectric coupling makes these multiferroic films promising candidates for device applications with the capability to tune the magnetism using an electric field.

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Magnetic structure of epitaxial multiferroic BiFeO₃ films with engineered ferroelectric domains

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