Complex Impedance Spectroscopy Studies of BaTiO3 Ceramic with 10% BaFe12O19 Substitution

Zainuddin Zalita; S.N. Anuar; Roslinda Shamsudin; M.N. Idris

doi:10.4028/www.scientific.net/AMR.1107.14

Paper Titles

Preface, Organizing Committee, Sponsors and Participants of the Conference

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Temperature Dependence on Dielectric Response of La_0.7Ba_0.3Mn_0.4Ti_0.6O₃ Ceramic
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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 1107Complex Impedance Spectroscopy Studies of BaTiO3...

Complex Impedance Spectroscopy Studies of BaTiO₃Ceramic with 10% BaFe₁₂O₁₉ Substitution

Abstract:

Barium titanate with 10% barium ferrite substitution (BaTiO₃-BaFe₁₂O₁₉) has been synthesized by the solid state reaction route. Formation of the BaFe₁₂O₁₉ phase confirmed its existence in the composite. Impedance spectroscopy study of the composite sample was performed at different temperatures of 25, 40, 80, 120 and 160 °C. BaFe₁₂O₁₉substituted sample shows a single semicircle at lower temperature and two overlapped arcs at 120 and 160 °C due to grain and grain boundary. The impedance plots were fitted based on a parallel R-CPE circuit. The grain boundary resistance behaves like the positive temperature coefficient of resistivity (PTCR) for donor-doped BaTiO₃semiconductor. The highest capacitance is contributed by the grain boundary at 80 °C.

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Periodical:

Advanced Materials Research (Volume 1107)

Pages:

14-19

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1107.14

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Online since:

June 2015

Authors:

Zainuddin Zalita, S.N. Anuar, Roslinda Shamsudin, M.N. Idris

Keywords:

Barium Ferrite, Barium Titanate (BT), Impedance Spectroscopy

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