Crystal structures of the ionic conductors Bi46M8O89 (M = P, V) related to the fluorite-type structure
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | DARRIET, Jacques | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | LAUNAY, Jean-Claude | |
| hal.structure.identifier | Departamento de Física de la Materia Condensada, Facultad de Ciencia y Tecnología | |
| dc.contributor.author | ZÚÑIGA, Francisco Javier | |
| dc.date.issued | 2005 | |
| dc.identifier.issn | 0022-4596 | |
| dc.description.abstractEn | The crystal structures of the two oxides Bi46M8O89 (M=P, V) have been solved from single crystals X-ray data at room temperature. Bi46P8O89 crystallizes in the monoclinic symmetry (space group C2/m) with the cell parameters a = 19.6073(4) A, b = 11.4181(4) A, c = 21.1119(4) A and β=112.14(3)°. The symmetry of Bi46V8O89 is also monoclinic but the space group is P21/c with the unit-cell parameters: a = 20.0100(4) A, b = 11.6445(4) A, c = 20.4136(4) A and β=107.27(3)°. Both structures derive from an oxygen deficient fluorite-type structure where the Bi and M cations (M=P, V) are ordered in the framework. The structures are characterised by isolated MO4 tetrahedra (M=P, V) which contradicts the previous results. The difference between the two structures is only due to a different order of the M atoms (M=P, V) in the fluorite-type superstructure. It will be shown that some oxygen sites are partially occupied in both structures which can explain the ion conduction properties of these phases. A structural building principle will be proposed that can explain the large domain of solid solution related to the fluorite-type observed in both systems. | |
| dc.language.iso | en | |
| dc.publisher | Elsevier | |
| dc.subject.en | Phosphorous | |
| dc.subject.en | Vanadium | |
| dc.subject.en | Bismuth | |
| dc.subject.en | Oxides | |
| dc.subject.en | Crystal structures | |
| dc.subject.en | Fluorite-type superstructure | |
| dc.title.en | Crystal structures of the ionic conductors Bi46M8O89 (M = P, V) related to the fluorite-type structure | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1016/j.jssc.2005.03.013 | |
| dc.subject.hal | Chimie/Matériaux | |
| bordeaux.journal | Journal of Solid State Chemistry | |
| bordeaux.page | p. 1753-1764 | |
| bordeaux.volume | vol. 178, n° 6 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-00022834 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Non spécifiée | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-00022834v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal%20of%20Solid%20State%20Chemistry&rft.date=2005&rft.volume=vol.%20178,%20n%C2%B0%206&rft.spage=p.%201753-1764&rft.epage=p.%201753-1764&rft.eissn=0022-4596&rft.issn=0022-4596&rft.au=DARRIET,%20Jacques&LAUNAY,%20Jean-Claude&Z%C3%9A%C3%91IGA,%20Francisco%20Javier&rft.genre=article |
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