Reference : Single-crystalline BiMnO3 studied by temperature-dependent x-ray diffraction and Rama...
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Physics
http://hdl.handle.net/10993/21320
Single-crystalline BiMnO3 studied by temperature-dependent x-ray diffraction and Raman spectroscopy
English
Toulemonde, P. [Université Grenoble Alpes, France > Institut Néel > > ; CNRS, Grenoble, France > Institut Néel]
Bordet, P. [Université Grenoble Alpes, France > Institut Néel > > ; CNRS, Grenoble, France > Institut Néel]
Bouvier, P. [CNRS, Grenoble Institute of Technology, France > Laboratoire des Matériaux et du Génie Physique]
Kreisel, Jens mailto [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit > ; CRP Gabriel Lippmann, Belvaux, Luxembourg > Département Science et Analyse des Matériaux]
2014
Physical Review B
89
22
Yes (verified by ORBilu)
International
1098-0121
[en] We report on the temperature dependence of the phonons and crystallographic parameters in BiMnO3 single
crystals grown under high pressure and high temperature. The crystallographic structure of the sample was refined
from room temperature to liquid helium temperature in the centrosymmetric C2/c space group, i.e., a group
which does not allow ferroelectricity. In addition, the lattice dynamics was probed by Raman spectroscopy down
to liquid nitrogen temperature, i.e., below the ferromagnetic transition at TC = 100 ± 2 K. Both crystallographic
and Raman data indicate the absence of a structural phase transition at the ferromagnetic ordering or any other
temperature. The Raman signature around TC shows a significant spin-phonon coupling for the high-frequency
bands.
http://hdl.handle.net/10993/21320
10.1103/PhysRevB.89.224107
Times Cited: 0 Kreisel, Jens/E-1939-2011 0
Journal Article

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