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Research Article | Open Access

Electrical transport in low-lead (1-x)BaTiO3-xPbMg1/3Nb2/3O3 ceramics

Institute of Technology, Pedagogical University, ul. Podchorazych 2, 30-084 Krakow, Poland
Department of Hydrogen Energy, Faculty of Energy and Fuels, AGH University of Science and Technology, al. Mickiewicza 30, 30-059 Krakow, Poland
Institute of Metallurgy and Materials Science, Polish Academy of Sciences, ul. Reymonta 25, 30-059 Krakow, Poland
Institute of Physics, Pedagogical University, ul. Podchorazych 2, 30-084 Krakow, Poland
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Low-lead (1-x)BaTiO3-xPbMg1/3Nb2/3O3 ceramics (x = 0, 0.025, 0.05, 0.075, 0.1, and 0.15) were prepared by the conventional oxide mixed sintering process, and their optical band gap, Seebeck coefficient, ac ( σac) and dc ( σdc) conductivities as a function of temperature were investigated for the first time. It was found that all samples have p-type conductivity. The low-frequency (20 Hz-2 MHz) ac conductivity obeys a power law σac~ωs, which is characteristic for disordered materials. The frequency exponent s is a decreasing function of temperature and tends to zero at high temperature. σac is proportional to ω0.07 - ω0.31 in the low-frequency region and to ω0.51 - ω0.98 in the high-temperature region. The temperature dependence of the dc conductivity showed a change in slope around the temperature at which the phase transition appeared. Both ac and dc conductivities showed a thermally activated character and possessed linear parts with different activation energies and some irregular changes. It was found that the hopping charge carriers dominate at low temperature and small polarons and oxygen vacancies dominate at higher temperature. (1-x)BaTiO3-xPbMg1/3Nb2/3O3 ceramics are expected to be promising new candidate for low-lead electronic materials.


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Journal of Advanced Ceramics
Pages 207-219
Cite this article:
SUCHANICZ J, KONIECZNY K, ŚWIERCZEK K, et al. Electrical transport in low-lead (1-x)BaTiO3-xPbMg1/3Nb2/3O3 ceramics. Journal of Advanced Ceramics, 2017, 6(3): 207-219.








Web of Science






Received: 21 December 2016
Revised: 30 March 2017
Accepted: 18 April 2017
Published: 29 September 2017
© The author(s) 2017

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