Suppression and recovery of the ferroelectric phase in multiferroic MnW O4

R. P. Chaudhury; B. Lorenz; Y. Q. Wang; Y. Y. Sun; C. W. Chu

doi:10.1103/PhysRevB.77.104406

Suppression and recovery of the ferroelectric phase in multiferroic MnW O4

R. P. Chaudhury, B. Lorenz, Y. Q. Wang, Y. Y. Sun, C. W. Chu

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Abstract

We report the discovery of a complete suppression of ferroelectricity in MnW O4 by 10% iron substitution and its restoration in external magnetic fields. The spontaneous polarization in Mn0.9 Fe0.1 W O4 arises below 12 K in external fields above 4 T. The magnetic and/or ferroelectric phase diagram is constructed from the anomalies of the dielectric constant, polarization, magnetization, and heat capacity. The observations are qualitatively described by a mean-field model with competing interactions and strong anisotropy. We propose that the magnetic field induces a noncollinear inversion symmetry breaking magnetic structure in Mn0.9 Fe0.1 W O4.

Original language	English
Article number	104406
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	77
Issue number	10
DOIs	https://doi.org/10.1103/PhysRevB.77.104406
Publication status	Published - 2008 Mar 7

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.77.104406

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abstract = "We report the discovery of a complete suppression of ferroelectricity in MnW O4 by 10% iron substitution and its restoration in external magnetic fields. The spontaneous polarization in Mn0.9 Fe0.1 W O4 arises below 12 K in external fields above 4 T. The magnetic and/or ferroelectric phase diagram is constructed from the anomalies of the dielectric constant, polarization, magnetization, and heat capacity. The observations are qualitatively described by a mean-field model with competing interactions and strong anisotropy. We propose that the magnetic field induces a noncollinear inversion symmetry breaking magnetic structure in Mn0.9 Fe0.1 W O4.",

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T1 - Suppression and recovery of the ferroelectric phase in multiferroic MnW O4

AU - Chaudhury, R. P.

AU - Lorenz, B.

AU - Wang, Y. Q.

AU - Sun, Y. Y.

AU - Chu, C. W.

PY - 2008/3/7

Y1 - 2008/3/7

N2 - We report the discovery of a complete suppression of ferroelectricity in MnW O4 by 10% iron substitution and its restoration in external magnetic fields. The spontaneous polarization in Mn0.9 Fe0.1 W O4 arises below 12 K in external fields above 4 T. The magnetic and/or ferroelectric phase diagram is constructed from the anomalies of the dielectric constant, polarization, magnetization, and heat capacity. The observations are qualitatively described by a mean-field model with competing interactions and strong anisotropy. We propose that the magnetic field induces a noncollinear inversion symmetry breaking magnetic structure in Mn0.9 Fe0.1 W O4.

AB - We report the discovery of a complete suppression of ferroelectricity in MnW O4 by 10% iron substitution and its restoration in external magnetic fields. The spontaneous polarization in Mn0.9 Fe0.1 W O4 arises below 12 K in external fields above 4 T. The magnetic and/or ferroelectric phase diagram is constructed from the anomalies of the dielectric constant, polarization, magnetization, and heat capacity. The observations are qualitatively described by a mean-field model with competing interactions and strong anisotropy. We propose that the magnetic field induces a noncollinear inversion symmetry breaking magnetic structure in Mn0.9 Fe0.1 W O4.

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Suppression and recovery of the ferroelectric phase in multiferroic MnW O4

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