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Ferroelectrics Volume 466, 2014 - Issue 1: Proceedings of the Thirteenth International Meeting on Ferroelectricity (IMF-13)
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SECTIONS E-G: PROCESSING, APPLICATIONS AND MISCELLANEOUS: SECTION E: PROCESSING

Thermal Treatment Effects in PbTiO3 Crystals Studied by XPS and Electric Conductivity Tests

M. PilchInstitute of Physics, University of Silesia, 40-007, Katowice, Poland;Peter Grünberg Institute, JARA-FIT, Forchungszentrum Jülich, 52425, Jülich, GermanyCorrespondence[email protected]
,
A. MolakInstitute of Physics, University of Silesia, 40-007, Katowice, Poland
&
K. SzotInstitute of Physics, University of Silesia, 40-007, Katowice, Poland;Peter Grünberg Institute, JARA-FIT, Forchungszentrum Jülich, 52425, Jülich, Germany
Pages 51-62 | Received 02 Sep 2013, Accepted 07 Nov 2013, Published online: 09 May 2014
 
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Abstract

The as-grown aged and thermally annealed at 720 K and 820 K PbTiO3 crystals were prepared. The ɛ′(T,f) and σAC(T,f) were measured at radio frequencies. Samples heated at 720 K shown resistive switching to metallic-type σAC(T). The resistivity switching was confirmed by RDC(T) measurement. The samples annealed at 820 K were rejuvenated, exhibited Curie-Weiss dependence above TC = 750 K and semiconductor conductivity. Annealing induced changes in shape of the Pb 4f, Ti 2p, O 1s, and VB XPS lines. We propose a model related to ionic migration toward FE domain walls and to vortices which provide conducting channels.

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