Study of the Dielectric Properties of Europium Doped Barium Titanate Ceramics by an Impedance Spectroscopy

The barium titanate (BaTiO 3 ) and the BaTiO 3 + 0.1wt.% Eu 2 O 3 ceramics were prepared by a conventional ceramic method. The structural studies were carried out by means of an X-ray diffraction technique. The influence of the grains and the grain boundaries on the electrical properties was investi...

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Bibliographic Details
Published inFerroelectrics Vol. 485; no. 1; pp. 58 - 62
Main Authors Sitko, D., Bąk, W., Garbarz-Glos, B., Kulińska, A., Antonova, M., Kalvane, A., Śmiga, W.
Format Journal Article
LanguageEnglish
Published Philadelphia Taylor & Francis 26.08.2015
Taylor & Francis Ltd
Subjects
barium titanate ceramic
Ceramics
Conductivity
Diffraction
Electric properties
Europium doping
Ferroelectrics
grain and grain boundary resistivity
Grain boundaries
impedance spectroscopy
Spectrum analysis
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Summary:The barium titanate (BaTiO 3 ) and the BaTiO 3 + 0.1wt.% Eu 2 O 3 ceramics were prepared by a conventional ceramic method. The structural studies were carried out by means of an X-ray diffraction technique. The influence of the grains and the grain boundaries on the electrical properties was investigated using a impedance spectroscopy. This technique enables us to determine the values of grain and grain boundary resistance. The results show that the Eu doping leads to a significant reduction in the resistance value of the grains (˜10 5 Ω) with respect to the pure BT ceramics (˜10 7 Ω). The conductivity processes were determined from the Arrhenius behaviour of grain and grain boundary resistances.
ISSN:0015-0193
1563-5112
DOI:10.1080/00150193.2015.1060108