The layered iron phosphate KMgFe(PO<sub>4</sub>)<sub>2</sub>: Crystal structure, Mössbauer spectroscopy and ionic conductivity
| hal.structure.identifier | Matériaux Inorganiques | |
| dc.contributor.author | BADRI, Abdessalem | |
| hal.structure.identifier | Matériaux Inorganiques | |
| dc.contributor.author | HIDOURI, Mourad | |
| hal.structure.identifier | Departamento de Quimica Inorganica I, Facultad de Ciencias Quimicas | |
| dc.contributor.author | LÓPEZ, María Luisa | |
| hal.structure.identifier | Departamento de Quimica Inorganica I, Facultad de Ciencias Quimicas | |
| dc.contributor.author | VEIGA, Maria Luisa | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | WATTIAUX, Alain | |
| hal.structure.identifier | Matériaux Inorganiques | |
| dc.contributor.author | BEN AMARA, Mongi | |
| dc.date.issued | 2009 | |
| dc.identifier.issn | 0167-2738 | |
| dc.description.abstractEn | A new iron phosphate, KMgFe(PO<sub>4</sub>)<sub>2</sub> has been synthesized and investigated by X-ray diffraction, Mössbauer spectroscopy and ionic conductivity. This compound crystallizes in the monoclinic space group C2/c with the parameters <i>a</i> = 18.529(7) Å, <i>b</i> = 5.402(3) Å, <i>c</i> = 9.374(9) Å, <i>β</i> = 120.64(5)° and <i>Z</i> = 4. Its original structure can be described as the stacking along the [101] direction of [MgFe(PO<sub>4</sub>)<sup>−</sup><sub>2</sub>]<sub>∞</sub> layers of corner-sharing MO<sub>4</sub> (M = 0.5 Fe + 0.5 Mg) and PO<sub>4</sub> tetrahedra. The K<sup>+</sup> ions are occupying the inter-layer space. The Mössbauer spectroscopy confirms the occurrence of only tetrahedral Fe<sup>3+</sup> ions and gives a definitive proof of the disordered character of their distribution. Ionic conductivity results obtained by the impedance spectroscopy technique show that this material is a two-dimensional ionic conductor, with low activation energy, 0.51 eV, that is interpreted on the basis of two-dimensional pathways. | |
| dc.language.iso | en | |
| dc.publisher | Elsevier | |
| dc.subject.en | Iron phosphate | |
| dc.subject.en | Layered structure | |
| dc.subject.en | X-ray diffraction | |
| dc.subject.en | Mössbauer spectroscopy | |
| dc.subject.en | Ionic conductivity | |
| dc.title.en | The layered iron phosphate KMgFe(PO<sub>4</sub>)<sub>2</sub>: Crystal structure, Mössbauer spectroscopy and ionic conductivity | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1016/j.ssi.2009.10.012 | |
| dc.subject.hal | Chimie/Matériaux | |
| bordeaux.journal | Solid State Ionics | |
| bordeaux.page | 1558-1563 | |
| bordeaux.volume | 180 | |
| bordeaux.issue | 36-39 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-00528914 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-00528914v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Solid%20State%20Ionics&rft.date=2009&rft.volume=180&rft.issue=36-39&rft.spage=1558-1563&rft.epage=1558-1563&rft.eissn=0167-2738&rft.issn=0167-2738&rft.au=BADRI,%20Abdessalem&HIDOURI,%20Mourad&L%C3%93PEZ,%20Mar%C3%ADa%20Luisa&VEIGA,%20Maria%20Luisa&WATTIAUX,%20Alain&rft.genre=article |
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