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Giant Tunability of Ferroelectric Polarization in GdMn_{2}O_{5}

DOI: 10.1103/PhysRevLett.110.137203 DOI Help
PMID: 23581365 PMID Help

Authors: N. Lee (Rutgers University) , C. Vecchini (National Physical Laboratory) , Y. J. Choi (Rutgers University; Yonsei University) , L. C. Chapon (ISIS Facility; Institut Laue-Langevin) , A. Bombardi (Diamond Light Source) , P. G. Radaelli (University of Oxford) , S.-w. Cheong (Rutgers University)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Physical Review Letters , VOL 110 (13)

State: Published (Approved)
Published: March 2013

Abstract: Giant tunability of ferroelectric polarization (P ΒΌ 5000 C=m2) in the multiferroic GdMn2O5 with external magnetic fields is discovered. The detailed magnetic model from x-ray magnetic scattering results indicates that the Gd-Mn symmetric exchange striction plays a major role in the tunable ferroelectricity of GdMn2O5, which is in distinction from other compounds of the same family. Thus, the highly isotropic nature of Gd spins plays a key role in the giant magnetoelectric coupling in GdMn2O5. This finding provides a new handle in achieving enhanced magnetoelectric functionality.

Subject Areas: Physics


Instruments: I16-Materials and Magnetism