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Ferroelectrics Volume 418, 2011 - Issue 1
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Original Articles

Electrical Transport Properties of Lead−Free (Na0.5Bi0.5)1-xBaxZr0.04Ti0.96O3 Ceramics (x = 0.06, 0.085, 0.1)

J. Suchanicz Institute of Physics, Pedagogical University, ul. Podchorazych 2, 30-084, Krakow, Poland
,
G. Stopa Institute of Physics, Pedagogical University, ul. Podchorazych 2, 30-084, Krakow, Poland
,
K. Pytel Institute of Technics, Pedagogical University, ul. Podchorazych 2, 30-084, Krakow, Poland
,
K. Konieczny Institute of Physics, Pedagogical University, ul. Podchorazych 2, 30-084, Krakow, Poland
,
A. Finder High National School, ul.Mickiewicza 21, 38-500, Sanok, Poland
,
M. Antonova Institute of Solid State Physics, University of Latvia, Kengaraga 8, LV-1063, Riga, Latvia
&
A. Sternberg Institute of Solid State Physics, University of Latvia, Kengaraga 8, LV-1063, Riga, Latvia
 show all
Pages 106-115 | Received 13 Sep 2010, Published online: 07 Oct 2011
 
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Abstract

Lead-free ceramics (Na0.5Bi0.5)1-xBaxZr0.04Ti0.96O3 were prepared by solid phase hot pressing sintering process. Density values of obtained samples are higher than 95% of the theoretical ones. Samples with x = 0.06, 0.085 and 0.1 were investigated in the present work. For these samples both ac and dc electric conductivity were studied. A low frequency (100 Hz-100 kHz) ac conductivity obeys the power law, characteristic for disordered materials. The dc conductivity has a thermally activated character. A barrier hopping model is found to explain the mechanism of charge transport in these materials. The (Na0.5Bi0.5)1-xBaxZr0.04Ti0.96O3 system is expected to be a new and promising candidate for the lead−free electronic ceramics.

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