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

Elena Borissenko; Marco Goffinet; Alexei Bosak; Pauline Rovillain; Maximilien Cazayous; Dorothée Colson; Philippe Ghosez; Michael Krisch

doi:10.1088/0953-8984/25/10/102201

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

Elena Borissenko ¹ Marco Goffinet ² Alexei Bosak ¹ Pauline Rovillain ^{3, 4} Maximilien Cazayous ⁵ Dorothée Colson ⁶ Philippe Ghosez ⁷ Michael Krisch ¹

1 ESRF - European Synchrotron Radiation Facility

2 Centre de Physiopathologie Toulouse Purpan

3 INSP - Institut des Nanosciences de Paris

4 INSP-E3 - Acoustique pour les nanosciences

INSP - Institut des Nanosciences de Paris

5 MPQ - Matériaux et Phénomènes Quantiques

6 LNO - Laboratoire Nano-Magnétisme et Oxydes

SPEC - UMR3680 - Service de physique de l'état condensé, IRAMIS - Institut Rayonnement Matière de Saclay

7 Université de Liège

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〉

Domaine :

Physique [physics]

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 : mercredi 21 mars 2018 - 18:58:21

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

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

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