Published December 2, 2002
| Version v1
Journal article
Electronic distribution in the Ba2FeMoO6 double perovskite; the A-site size effect
Creators
- 1. Laboratoire CRISMAT, UMR 6508 Associee au CNRS, ISMRA et Universite de Caen, 6 Boulevard du Marechal Juin, 14050 Caen (France)
- 2. LLB-Saclay, 91151 Gif sur Yvette (France)
- 3. Laboratoire de Physique de l'Etat Condense, UMR CNRS 6087, Universite du Maine, 72085 Le Mans Cedex 9 (France)
Description
The double perovskite Ba2FeMoO6 has been studied by neutron powder diffraction, Moessbauer spectrometry and x-ray absorption spectroscopy, and is compared with Sr2FeMoO6. It is shown that the size of the A-site cation has a large effect upon the nature of the low-temperature state, favouring the majority Fe2+/Mo6+ pair in the case of barium and the Fe3+/Mo5+ pair in the case of strontium. In both cases, an electronic transfer appears as T decreases, interpreted as the existence of a minority t2g ↓ narrow band, where the electron is itinerant
Availability note (English)
Available online at http://stacks.iop.org/0953-8984/14/12629/c24733.pdf or at the Web site for the Journal of Physics. Condensed Matter (ISSN 1361-648X) http://www.iop.org/Additional details
Identifiers
- URL
- http://stacks.iop.org/0953-8984/14/12629/c24733.pdf; http://www.iop.org/;
- PII
- S0953-8984(02)33192-8;
Publishing Information
- Journal Title
- Journal of Physics. Condensed Matter
- Journal Volume
- 14
- Journal Issue
- 47
- Journal Page Range
- p. 12629-12640
- ISSN
- 0953-8984
- CODEN
- JCOMEL
INIS
- Country of Publication
- United Kingdom
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 34031267
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- ABSORPTION SPECTROSCOPY; BARIUM COMPOUNDS; CATIONS; IRON COMPOUNDS; MOESSBAUER EFFECT; MOLYBDENUM COMPOUNDS; NEUTRON DIFFRACTION; OXYGEN COMPOUNDS; PEROVSKITE; POWDERS; TEMPERATURE DEPENDENCE; X-RAY SPECTROSCOPY
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; CHARGED PARTICLES; COHERENT SCATTERING; DIFFRACTION; IONS; MINERALS; OXIDE MINERALS; PEROVSKITES; REFRACTORY METAL COMPOUNDS; SCATTERING; SPECTROSCOPY; TRANSITION ELEMENT COMPOUNDS