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hal.structure.identifierMatériaux Inorganiques
dc.contributor.authorBADRI, Abdessalem
hal.structure.identifierMatériaux Inorganiques
dc.contributor.authorHIDOURI, Mourad
hal.structure.identifierDepartamento de Quimica Inorganica I, Facultad de Ciencias Quimicas
dc.contributor.authorLÓPEZ, María Luisa
hal.structure.identifierDepartamento de Quimica Inorganica I, Facultad de Ciencias Quimicas
dc.contributor.authorVEIGA, Maria Luisa
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorWATTIAUX, Alain
hal.structure.identifierMatériaux Inorganiques
dc.contributor.authorBEN AMARA, Mongi
dc.date.issued2009
dc.identifier.issn0167-2738
dc.description.abstractEnA 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.isoen
dc.publisherElsevier
dc.subject.enIron phosphate
dc.subject.enLayered structure
dc.subject.enX-ray diffraction
dc.subject.enMössbauer spectroscopy
dc.subject.enIonic conductivity
dc.title.enThe layered iron phosphate KMgFe(PO<sub>4</sub>)<sub>2</sub>: Crystal structure, Mössbauer spectroscopy and ionic conductivity
dc.typeArticle de revue
dc.identifier.doi10.1016/j.ssi.2009.10.012
dc.subject.halChimie/Matériaux
bordeaux.journalSolid State Ionics
bordeaux.page1558-1563
bordeaux.volume180
bordeaux.issue36-39
bordeaux.peerReviewedoui
hal.identifierhal-00528914
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00528914v1
bordeaux.COinSctx_ver=Z39.88-2004&amp;rft_val_fmt=info:ofi/fmt:kev:mtx:journal&amp;rft.jtitle=Solid%20State%20Ionics&amp;rft.date=2009&amp;rft.volume=180&amp;rft.issue=36-39&amp;rft.spage=1558-1563&amp;rft.epage=1558-1563&amp;rft.eissn=0167-2738&amp;rft.issn=0167-2738&amp;rft.au=BADRI,%20Abdessalem&amp;HIDOURI,%20Mourad&amp;L%C3%93PEZ,%20Mar%C3%ADa%20Luisa&amp;VEIGA,%20Maria%20Luisa&amp;WATTIAUX,%20Alain&amp;rft.genre=article


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