ISSN
2231–4202  (Print)                
2249–9970  (Online)             


JPAST is biannual multidisciplinary journal starting from July 2011. Articles are invited for July 20 issue.
Electrical Properties of BiFeO3 – BaTiO3 Ceramics-S. Shankar and Manish Kumar.

Electrical Properties of BiFeO3 – BaTiO3 Ceramics

S. Shankar1 and Manish Kumar2, *

1 Department of Physics, ARSD college, University of Delhi, New Delhi, India.

2,* Department of Ceramic Engineering, IIT, Banaras Hindu University, Varanasi, India.

BiFeO3– BaTiO3 ceramicshave been synthesized via solid state reaction method. The X-ray studies of structural parameters reveal that BiFeO3– BaTiO3 (BFO-BT) solid solutions undergo structural transformations from rhombhohedral to cubic system. The unit cell dimensions increases with higher doping of higher ionic radii dopant (BT). The electrical properties for different composition x=0.10,0.15 and 0.30 in (1-x)BFO-xBT ceramics were studied in the frequency range 1kHz-1MHz at room temperature. It is found that the BFO with higher BT concentrations show higher electrical resistivity as well as capacitance. The decrease in electrical resistance and capacitance has been observed with the increase of frequency of the applied field. The larger dispersion in resistivity is due to dominance of intra-well hopping over inter-well hopping indicating a strong dependence of material properties on BT doping.

Keywords: Capacitance. Resistivity. X-ray diffraction. SEM.

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