Incommensurate magnetic structure of YMn2O5: A stringent test of the multiferroic mechanismopen access
- Authors
- Radaelli, P. G.; Vecchini, C.; Chapon, L. C.; Brown, P. J.; Park, S.; Cheong, S.-W.
- Issue Date
- Jan-2009
- Publisher
- AMER PHYSICAL SOC
- Keywords
- dielectric polarisation; magnetic structure; multiferroics; neutron diffraction; yttrium compounds
- Citation
- PHYSICAL REVIEW B, v.79, no.2
- Journal Title
- PHYSICAL REVIEW B
- Volume
- 79
- Number
- 2
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/57377
- DOI
- 10.1103/PhysRevB.79.020404
- ISSN
- 2469-9950
2469-9969
- Abstract
- We have determined the magnetic structure of the low-temperature incommensurate phase of multiferroic YMn2O5 using single-crystal neutron diffraction. By employing corepresentation analysis, we have ensured full compliance with both symmetry and physical constraints, so that the electrical polarization must lie along the b axis, as observed. The evolution of the spin components and propagation through the commensurate-incommensurate phase boundary identifies the exchange-striction mechanism as the primary driving force for ferroelectricity.
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- Appears in
Collections - College of Natural Sciences > Department of Physics > 1. Journal Articles
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