Study of Fe-doped La1-xCaxMnO3 (x similar or equal to 1/3) using Mossbauer spectroscopy and neutron diffraction

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dc.contributor.authorSimopoulos, A.en
dc.contributor.authorPissas, M.en
dc.contributor.authorKallias, G.en
dc.contributor.authorDevlin, E.en
dc.contributor.authorMoutis, N.en
dc.contributor.authorPanagiotopoulos, I.en
dc.contributor.authorNiarchos, D.en
dc.contributor.authorChristides, C.en
dc.contributor.authorSonntag, R.en
dc.date.accessioned2015-11-24T17:38:48Z
dc.date.available2015-11-24T17:38:48Z
dc.identifier.issn0163-1829-
dc.identifier.urihttps://olympias.lib.uoi.gr/jspui/handle/123456789/14552
dc.rightsDefault Licence-
dc.subjectresistivityen
dc.subjectdynamicsen
dc.titleStudy of Fe-doped La1-xCaxMnO3 (x similar or equal to 1/3) using Mossbauer spectroscopy and neutron diffractionen
heal.abstractLa2/3Ca1/3MnO3 doped with Fe were studied by Mossbauer spectroscopy and neutron powder diffraction. The Mossbauer spectra (MS) reveal that Fe substitutes for Mn as Fe3+ (S= 5/2) and is antiferromagnetically coupled to the Mn host lattice. The magnetic behavior, from the neutron diffraction data, is that of atypical 3D Heisenberg ferromagnet. The temperature evolution of the MS differs from that of the neutron data, especially above 40 K. The data can be interpreted using a model based on an antiferromagnetic impurity in a ferromagnetic host. In such a system, the ground state is inhomogeneous resulting in spin states with reduced spin and the spin excitations are localized in the immediate neighborhood of the impurity atoms. Finally, at T approximate to 0.9T(c) the MS indicate the onset of charge localization. [S0163-1829(99)09101-8].en
heal.accesscampus-
heal.fullTextAvailabilityTRUE-
heal.identifier.primaryDOI 10.1103/PhysRevB.59.1263-
heal.identifier.secondary<Go to ISI>://000078111600074-
heal.journalNamePhysical Review Ben
heal.journalTypepeer reviewed-
heal.languageen-
heal.publicationDate1999-
heal.publisherAmerican Physical Societyen
heal.recordProviderΠανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Μηχανικών Επιστήμης Υλικώνel
heal.typejournalArticle-
heal.type.elΆρθρο Περιοδικούel
heal.type.enJournal articleen

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