Single crystal growth of BiMnO3 under high pressure-high temperature

Pierre Bordet (1) , Céline Darie (1) , Céline Goujon (2) , Virginie Simonet (3) , Pierre Toulemonde (1) , Murielle Legendre (2) , Tania Mendonca (4) , Michelle Alvarez-Murga (1) , Pierre Bouvier (5) , Jens Kreisel (5) , Mohammed Mezouar (6)

1 NEEL - MRS - Matériaux, Rayonnements, Structure
2 NEEL - X'Press - X'Press : diffraction et hautes pressions
3 NEEL - MagSup - Magnétisme et Supraconductivité
4 IFIMUP - nstituto de Física dos Materiais da Universidade do Porto
5 LMGP - Laboratoire des matériaux et du génie physique
6 ESRF - European Synchrotron Radiation Facility

In the literature, the properties of the multiferroic BiMnO3 oxide have been studied in polycrystalline and thin film materials. Here, we report the first study performed on a single crystal of BiMnO3. The single crystals were grown at high pressure-high temperature (HP-HT) in a belt system using a flux method based on H3BO3. For the first time, we have measured the Raman spectrum of BiMnO3 and solved its crystallographic structure based on the data collected by X-ray diffraction (XRD) on a single crystal. In addition, we have studied in situ the HP-HT synthesis of polycrystalline BiMnO3 by XRD. Starting from a mixture of Bi2O3 and Mn2O3, an intermediate phase has been found before the formation of the distorted perovskite BiMnO3.

Mots clés: high-pressure-high-temperature synthesis; multiferroic materials; magnetic and electronic properties

Domaines: Electrons fortement corrélés [cond-mat.str-el]

Pierre Bordet, Céline Darie, Céline Goujon, Virginie Simonet, Pierre Toulemonde, et al.. Single crystal growth of BiMnO3 under high pressure-high temperature. 47th Meeting of the European-High-Pressure-Research-Group (EHPRG 47), Sep 2009, Paris, France. ⟨hal-00703446⟩