Ferroelectricity induced by acentric spin-density waves in YMn2O5.
The commensurate and incommensurate magnetic structures of the magnetoelectric system YMn2O5, as determined from neutron diffraction, were found to be spin-density waves lacking a global center of symmetry. We propose a model, based on a simple magnetoelastic coupling to the lattice, which enables u...
Main Authors: | Chapon, L, Radaelli, P, Blake, G, Park, S, Cheong, S |
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Format: | Journal article |
Language: | English |
Published: |
2006
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