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Vol. 29 No. 10 (2017): Vol 29 Issue 10

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Dielectric Anomalies of BaTi1-xFexO3 Ceramics for x = 0.0 to 0.6 of Fe Doping Concentration

https://doi.org/10.14233/ajchem.2017.20653
N. Gouitaa
Signals, Systems and Components Laboratory (LSSC), Electrical Engineering Department, Université Sidi Mohamed Ben Abdellah, FST Fez, Imouzzer Road B.P. 2202, Morocco
T. Lamcharfi
Signals, Systems and Components Laboratory (LSSC), Electrical Engineering Department, Université Sidi Mohamed Ben Abdellah, FST Fez, Imouzzer Road B.P. 2202, Morocco
Mf. Bouayad
Signals, Systems and Components Laboratory (LSSC), Electrical Engineering Department, Université Sidi Mohamed Ben Abdellah, FST Fez, Imouzzer Road B.P. 2202, Morocco
F. Abdi
Signals, Systems and Components Laboratory (LSSC), Electrical Engineering Department, Université Sidi Mohamed Ben Abdellah, FST Fez, Imouzzer Road B.P. 2202, Morocco
N.S. Echatoui
Signals, Systems and Components Laboratory (LSSC), Electrical Engineering Department, Université Sidi Mohamed Ben Abdellah, FST Fez, Imouzzer Road B.P. 2202, Morocco
N. Hadi
Signals, Systems and Components Laboratory (LSSC), Electrical Engineering Department, Université Sidi Mohamed Ben Abdellah, FST Fez, Imouzzer Road B.P. 2202, Morocco

Corresponding Author(s) : N. Gouitaa

najwa.goutaa@gmail.com

Asian Journal of Chemistry, Vol. 29 No. 10 (2017): Vol 29 Issue 10

Abstract

The BaTi1-xFexO3 ceramics (x = 0.0, 0.1, 0.2, 0.3, 0.4, 0.5 and 0.6) were prepared by the solid state reaction method. The effect of iron substitution on structural and dielectric properties of BaTiO3 ceramic was studied. These compounds are found to crystallize in the mixture of tetragonal and hexagonal phases for x £ 0.3 and only hexagonal phase for x > 0.3. Raman spectra indicate that when iron content increases, the intensity of Raman peaks of the tetragonal phase decreases and hexagonal phase grows, which confirm the X-ray results. The dielectric properties of BaTi1-xFexO3 ceramics as function of frequency are studied and showed a relaxation phenomena for pure barium and titanium (BT) (x = 0.0) which is displaced to the higher frequencies accompanied with a decrease in dielectric constant when x increase. The evolution of dielectric permittivity as function of temperature shows a phase transition temperature at Tc = 135 °C for BT and a clear shifting of this temperature to the higher temperature for BaTi1-xFexO3 ceramics.

Keywords

Ceramics Barium titanate(IV) Structural Dielectric properties X-ray diffraction Raman Transition temperature
Gouitaa, N., Lamcharfi, . T., Bouayad, M., Abdi, F., Echatoui, N., & Hadi, N. (2017). Dielectric Anomalies of BaTi1-xFexO3 Ceramics for x = 0.0 to 0.6 of Fe Doping Concentration. Asian Journal of Chemistry, 29(10), 2143–2148. https://doi.org/10.14233/ajchem.2017.20653
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