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Novel Charge Ordering in the Trimer Iridium Oxide BaIrO3
- Source :
- Crystals, Vol 6, Iss 3, p 27 (2016)
- Publication Year :
- 2016
- Publisher :
- MDPI AG, 2016.
-
Abstract
- We have prepared polycrystalline samples of the trimer Ir oxide BaIrO3 with face-shared Ir3O12 trimers, and have investigated the origin of the phase transition at 182 K by measuring resistivity, thermopower, magnetization and synchrotron X-ray diffraction. We propose a possible electronic model and transition mechanism, starting from a localized electron picture on the basis of the Rietveld refinement. Within this model, BaIrO3 can be basically regarded as a Mott insulator, when the Ir3O12 trimer is identified to one pseudo-atom or one lattice site. The transition can be viewed as a transition from the Mott insulator phase to a kind of charge ordered insulator phase.
Details
- Language :
- English
- ISSN :
- 20734352
- Volume :
- 6
- Issue :
- 3
- Database :
- Directory of Open Access Journals
- Journal :
- Crystals
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.882e9066a00643e1b7cfe8d0c0b2c960
- Document Type :
- article
- Full Text :
- https://doi.org/10.3390/cryst6030027