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Local structure around Fe ions on multiferroic Pb(Fe1/2Nb1/2)O3 ceramics probed by x-ray absorption spectroscopy

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4 Author(s)
Mesquita, A. ; Grupo de Cerâmicas Ferroelétricas, Departamento de Física, Universidade Federal de São Carlos, São Carlos, SP, Brazil ; Fraygola, B.M. ; Mastelaro, V.R. ; Eiras, J.A.

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Local structure around Fe ions on Pb(Fe1/2Nb1/2)O3 ceramics was probed by x-ray absorption spectroscopy in order to settle the controversies about its structure. It is observed that the shell structure around Fe atoms exhibits a monoclinic local symmetry at 130 and 230 K, tetragonal local symmetry at room temperature, and cubic local symmetry at 410 K. Independently of the coordination, temperature, or symmetry, Fe-O mean bond-length does not vary significantly.

Published in:

Applied Physics Letters  (Volume:100 ,  Issue: 17 )

Date of Publication:

Apr 2012

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