Lattice dynamics of multiferroic BiFeO 3 studied by inelastic x-ray scattering

Abstract : We report an experimental study of the phonon dispersion in BiFeO(3) single crystals at ambient conditions by inelastic x-ray scattering (IXS). The phonon dispersions were recorded along several symmetry directions up to 35 meV. Our results compare favorably with first-principles calculations performed using density functional theory (DFT) within the local-density approximation (LDA). We resolve a discrepancy concerning the symmetry of the optical phonon branches observed by Raman spectroscopy, determine the energy of the lowest Raman and infrared silent mode, and derive a subset of the elastic moduli of BiFeO(3).
Type de document :
Article dans une revue
Journal of Physics: Condensed Matter, IOP Publishing, 2013, 25 (10), pp.102201 〈10.1088/0953-8984/25/10/102201〉
Liste complète des métadonnées

https://hal-cea.archives-ouvertes.fr/cea-01478932
Contributeur : Dominique Girard <>
Soumis le : mardi 28 février 2017 - 14:52:50
Dernière modification le : vendredi 16 novembre 2018 - 02:13:55

Identifiants

Citation

Elena Borissenko, Marco Goffinet, Alexei Bosak, Pauline Rovillain, Maximilien Cazayous, et al.. Lattice dynamics of multiferroic BiFeO 3 studied by inelastic x-ray scattering. Journal of Physics: Condensed Matter, IOP Publishing, 2013, 25 (10), pp.102201 〈10.1088/0953-8984/25/10/102201〉. 〈cea-01478932〉

Partager

Métriques

Consultations de la notice

119