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Structural anomalies at the magnetic transition in centrosymmetric BiMnO3 (Articolo in rivista)
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- Label
- Structural anomalies at the magnetic transition in centrosymmetric BiMnO3 (Articolo in rivista) (literal)
- Anno
- 2007-01-01T00:00:00+01:00 (literal)
- Alternative label
E. Montanari 1, G. Calestani 1,2, L. Righi 1, E. Gilioli 2, F. Bolzoni 2, K.S. Knight 3, and P.G. Radaelli 3 (2007)
Structural anomalies at the magnetic transition in centrosymmetric BiMnO3
in arXiv
(literal)
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- E. Montanari 1, G. Calestani 1,2, L. Righi 1, E. Gilioli 2, F. Bolzoni 2, K.S. Knight 3, and P.G. Radaelli 3 (literal)
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- 1 Dipartimento di Chimica GIAF, Universit`a di Parma, Parco Area delle Scienze 17A, 43100 Parma, Italy; 21 CNR-IMEM, Parco Area delle Scienze 37/A - 43010 Loc. Fontanini-Parma, Italy; 3 ISIS facility, Rutherford Appleton Laboratory-CCLRC, Chilton, Didcot, Oxfordshire, OX11 0QX, UK; 4 Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, UK (literal)
- Titolo
- Structural anomalies at the magnetic transition in centrosymmetric BiMnO3 (literal)
- Abstract
- The structural properties of BiMnO3 were determined from neutron powder diffraction data as a
function of temperature and magnetic field. The structure at all temperatures was found to be cen-
trosymmetric with space group C2/c, which is incompatible with ferroelectricity. At TC ? 100K, we
observed the onset of a large magnetoelastic strain, proportional to the square of the magnetization.
We interpret this structural rearrangement, together with the previously observed magnetodielectric
anomalies, as due to the need to optimize the partially frustrated magnetic interactions. (literal)
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