Rare earth magnetism and ferroelectricity in RMnO3

Details Rare earth magnetism and ferroelectricity in RMnO3 Rare earth magnetism and ferroelectricity in RMnO3

2009-05-25

arxiv.org/abs/0905.4019v1

Journal of Physics: Conference Series 200 (2010) 012032.

Physics

Condensed Matter

Strongly Correlated Electrons

Contribution to ICM 2009; accepted for publication in Journal of Physics: Conference Series

Scientific paper

Magnetic rare earths R have been proven to have a significant effect on the multiferroic properties of the orthorhombic manganites RMnO3. A re-examination of previous results from synchrotron based x-ray scattering experiments suggests that symmetric exchange striction between neighboring R and Mn ions may account for the enhancement of the ferroelectric polarization in DyMnO3 as well as the magnetic-field induced ferroelectricity in GdMnO3. In general, adding a second magnetic species to a multiferroic material may be a route to enhance its ferroelectric properties.

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