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Ferroelectrics Volume 418, 2011 - Issue 1
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Original Articles

The Estimation of the Mn Atoms Chemical Bonding in (Na1-xBix)(Nb1-yMny)O3 Ceramics and Changeover in the Electrical Properties

A. Molak Institute of Physics, University of Silesia, ul. Uniwersytecka 4, 40-007, Katowice, Poland
,
K. Lawniczak-Jablonska Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668, Warszawa, Poland
,
P. Nachimuthu Center for X-ray Optics, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
&
R. C. C. Perera Center for X-ray Optics, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
Pages 14-18 | Received 13 Sep 2010, Published online: 07 Oct 2011
 
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Abstract

The chemical bonding of Mn atoms in (Na1-xBix)(Nb1-yMny)O3 ceramics were analysed using the X-ray Absorption Near Edge Structure (XANES) measurement at the Mn L3,2–edge. In all the compounds coexistence of the covalent bonding MnCV state and ionic Mn+k states was found. The increase in the Bi and Mn content caused the marked dispersion and increased the values of electric conductivity and dielectric permittivity of the ceramics.

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