Fe K-edge X-ray absorption spectroscopy study of Pb(Fe2/3W 1/3)O3-PbTiO3 multiferroic ceramics

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorMesquita, A.
dc.creatorFraygola, B. M.
dc.creatorMastelaro, V. R.
dc.creatorEiras, J. A.
dc.date2014-05-27T11:28:42Z
dc.date2016-10-25T18:45:42Z
dc.date2014-05-27T11:28:42Z
dc.date2016-10-25T18:45:42Z
dc.date2013-03-21
dc.date.accessioned2017-04-06T02:17:12Z
dc.date.available2017-04-06T02:17:12Z
dc.identifierJournal of Applied Physics, v. 113, n. 11, 2013.
dc.identifier0021-8979
dc.identifierhttp://hdl.handle.net/11449/74859
dc.identifierhttp://acervodigital.unesp.br/handle/11449/74859
dc.identifier10.1063/1.4795505
dc.identifierWOS:000316545200046
dc.identifier2-s2.0-84875728461.pdf
dc.identifier2-s2.0-84875728461
dc.identifierhttp://dx.doi.org/10.1063/1.4795505
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/895618
dc.descriptionThe present paper is a comprehensive study concerning Fe K-edge X-ray absorption spectroscopy (XAS) measurements, which were performed to characterize the local structure of (1 - x)Pb(Fe2/3W1/3)O 3-xPbTiO3 samples as a function of temperature and PbTiO3 content. Results obtained by the fits of extended X-ray absorption fine structure consist with rhombohedral symmetry for Pb(Fe 2/3W1/3)O3 composition at temperatures lower than room temperature. This result is in apparent disagreement with X-ray and neutron diffraction characterization which have been reported. This apparent disagreement is related to the fact that XAS probes the short-range order, whereas X-ray diffraction provides structural information about the average structure. Moreover, as the PbTiO3 content increases, a disorder has been detected at local structure of the FeO6 octahedron. Analysis of X-ray absorption near edge structure spectra did not show modifications in intensity nor energy of transitions. © 2013 American Institute of Physics.
dc.languageeng
dc.relationJournal of Applied Physics
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectAverage structure
dc.subjectExtended X-ray absorption fine structures
dc.subjectMultiferroic ceramics
dc.subjectRhombohedral symmetry
dc.subjectShort range orders
dc.subjectStructural information
dc.subjectX-ray absorption near-edge structure
dc.subjectX-Ray and neutron diffraction
dc.subjectAbsorption spectra
dc.subjectExtended X ray absorption fine structure spectroscopy
dc.subjectNeutron diffraction
dc.subjectX ray absorption near edge structure spectroscopy
dc.subjectX ray absorption spectroscopy
dc.subjectX ray diffraction
dc.subjectLead
dc.titleFe K-edge X-ray absorption spectroscopy study of Pb(Fe2/3W 1/3)O3-PbTiO3 multiferroic ceramics
dc.typeOtro


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