Observation of phonons in multiferroic BiFeO3single crystals by Raman scattering
- 24 August 2007
- journal article
- Published by IOP Publishing in Journal of Physics: Condensed Matter
- Vol. 19 (36), 365224
- https://doi.org/10.1088/0953-8984/19/36/365224
Abstract
We have grown BiFeO(3) bulk single crystals by a flux method and characterized the phonon spectra in detail by Raman scattering in the temperature range 4-1100 K. All the 13 Raman-active phonon modes predicted by group theory, 4A(1)+9E, were observed at low temperature and successfully assigned by a polarized Raman measurement. Moreover, drastic spectral changes in the Raman spectra were observed at temperatures 600-700 K and 1000-1100 K. These features are discussed from the viewpoint of phonon coupling with the magnetic ordering and the structural phase transition, respectively.Keywords
This publication has 11 references indexed in Scilit:
- Phonon anomalies and the ferroelectric phase transition in multiferroicPhysical Review B, 2006
- Polarized Raman scattering of multiferroic BiFeO3 epitaxial films with rhombohedral R3c symmetryApplied Physics Letters, 2006
- Comment on "Epitaxial BiFeO 3 Multiferroic Thin Film Heterostructures"Science, 2005
- Giant Ferroelectric Polarization Beyond 150 µC/cm2 in BiFeO3 Thin FilmJapanese Journal of Applied Physics, 2004
- Epitaxial BiFeO 3 Multiferroic Thin Film HeterostructuresScience, 2003
- Raman spectroscopy of orthorhombic perovskitelikeandPhysical Review B, 1998
- Raman- and infrared-active phonons in hexagonal: Experiment and lattice-dynamical calculationsPhysical Review B, 1997
- Growth, twinning and etch figures of ferroelectric/ferroelastic dendritic BiFeO3 single domain crystalsJournal of Crystal Growth, 1993
- Anharmonic effects in light scattering due to optical phonons in siliconPhysical Review B, 1983
- X-Ray Diffractometric Determination of the Curie Temperature and Temperature Dependence of Spontaneous Polarization of Hexagonal (Rhombohedral) FerroelectricsPhysica Status Solidi (b), 1971