Please use this identifier to cite or link to this item: http://hdl.handle.net/1822/13972

TitleOn the mechanisms and signature of atomic mechanisms in multiferroics: the example of Ba2 CoGe2O7
Author(s)Perez-Mato, J. M.
Ribeiro, J. L.
KeywordsMagnetic symmetry
Multiferroics
magnetoelectric effects
Issue date2011
PublisherWiley-Blackwell
JournalActa Crystallographica. Section A: Foundations of Crystallography
Abstract(s)The systematic use of symmetry arguments, with inclusion of magnetic symmetry, is scarce in the investigation of magnetic materials. This is an unfortunate situation particularly when multiferroics are being studied. The lack of a consistent complete symmetry framework often prevents the distinction of what is the signature of a specific atomic mechanism and what is symmetryforced and therefore common to any possible underlying microscopic model. Here the recently reported magnetoelectric properties of Ba2CoGe2O7 [Murakawa et al. (2010). Phys. Rev. Lett. 105, 137202] are discussed as an extreme example of this situation, and it is shown how three of the four magnetoelectric responses that have been reported for this compound can be predicted by symmetry considerations without appealing to any specific atomic mechanism.
TypeArticle
URIhttp://hdl.handle.net/1822/13972
DOI10.1107/S0108767311010282
ISSN0108-7673
Peer-Reviewedyes
AccessRestricted access (UMinho)
Appears in Collections:CDF - FCD - Artigos/Papers (with refereeing)

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