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On the synthesis, characterization and magnetic properties of two new phases discovered in the PbO-Fe2O3-P2O5 system

hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorEL HAFID, Hassan
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorVELÁZQUEZ, Matias
hal.structure.identifierLaboratoire de cristallographie et sciences des matériaux [CRISMAT]
dc.contributor.authorPÉREZ, Olivier
hal.structure.identifierFaculté des Sciences Ben M'sik [Casablanca]
dc.contributor.authorEL JAZOULI, Abdelaziz
hal.structure.identifierLaboratoire de cristallographie et sciences des matériaux [CRISMAT]
dc.contributor.authorPAUTRAT, Alain
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorDECOURT, Rodolphe
hal.structure.identifierConditions Extrêmes et Matériaux : Haute Température et Irradiation [CEMHTI]
dc.contributor.authorVÉRON, Emmanuel
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorVIRAPHONG, Oudomsack
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorDELMAS, Claude
dc.date.issued2013
dc.identifier.issn0022-4596
dc.description.abstractEnThe PbFe3O(PO4)3 powder compound was studied by means of X-ray diffraction (XRD) from 300 to 6 K, electron-probe microanalysis (EPMA) coupled with wavelength dispersion spectroscopy (WDS), calorimetric (DSC and specific heat) and magnetic properties measurements. Magnetization, magnetic susceptibility and specific heat measurements carried out on PbFe3O(PO4)3 powders firmly establish a series of three ferromagnetic (FM)-like second order phase transitions spanned over the 32-8 K temperature range. Discrepancies between magnetization and specific heat data obtained in PbFe3O(PO4)3 powders and single crystals are highlighted. A first extraction of the critical exponents (β,γ,δ) was performed by ac magnetic susceptibility in both PbFe3O(PO4)3 powders and single crystals and the values were found to be consistent with mean-field theory. Further exploration of the PbO-Fe2O3-P2O5 system led to the discovery of a new langbeinite phase, Pb1.5Fe2(PO4)3, the crystal structure of which was solved by room temperature single crystal XRD (P213, Z=4, a=9.7831(2) Å). This phase does not undergo any structural phase transition down to 6 K nor any kind of long range ordering down to 2 K.
dc.language.isoen
dc.publisherElsevier
dc.subject.enX-ray diffraction
dc.subject.enPhosphates
dc.subject.enPhase transitions
dc.subject.enFerrimagnetism
dc.subject.enSpecific heat
dc.subject.enRaman spectroscopy
dc.title.enOn the synthesis, characterization and magnetic properties of two new phases discovered in the PbO-Fe2O3-P2O5 system
dc.typeArticle de revue
dc.identifier.doi10.1016/j.jssc.2013.03.011
dc.subject.halChimie/Matériaux
bordeaux.journalJournal of Solid State Chemistry
bordeaux.page85-92
bordeaux.volume202
bordeaux.peerReviewedoui
hal.identifierhal-00836064
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00836064v1
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