Mesquita, A. [UNESP]Fraygola, B. M.Mastelaro, V. R.Eiras, J. A.2014-05-272014-05-272013-03-21Journal of Applied Physics, v. 113, n. 11, 2013.0021-8979http://hdl.handle.net/11449/74859The 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.engAverage structureExtended X-ray absorption fine structuresMultiferroic ceramicsRhombohedral symmetryShort range ordersStructural informationX-ray absorption near-edge structureX-Ray and neutron diffractionAbsorption spectraExtended X ray absorption fine structure spectroscopyNeutron diffractionX ray absorption near edge structure spectroscopyX ray absorption spectroscopyX ray diffractionLeadArtigo10.1063/1.4795505WOS:000316545200046Acesso restrito2-s2.0-848757284612-s2.0-84875728461.pdf