The impedance and conductivity studies on BiFeO3 and 0.90BiFeO3-0.10Bi0.5Na0.5TiO3 ceramics

Rao, T. Durga and Tangavelua, Karthik and Asthana, Saket (2015) The impedance and conductivity studies on BiFeO3 and 0.90BiFeO3-0.10Bi0.5Na0.5TiO3 ceramics. In: 59th DAE Solid State Physics Symposium, 16-20 December 2014, VIT University Vellore, Tamilnadu; India.

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Abstract

Polycrystalline BiFeO3and 0.90BiFeO3-0.10Bi0.5Na0.5TiO3compounds were synthesized by conventional solid state route. The compounds were crystallized in rhombohedral structure with R3c space group. Complex impedance studies revealed that insulating character of both grain and grain boundaries were improved in 0.90BiFeO3-0.10Bi0.5Na0.5TiO3compound. Both complex and modulus plots confirmed the presence of non-Debye type relaxations in these compounds. Frequency dependence of AC conductivity at different temperatures suggests that charge carriers follow correlated barrier hopping (CBH) model. Estimated activation energies indicated that oxygen vacancies movements are the prime contributors to the conduction in the measured temperature range.

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IITH Creators:	IITH Creators ORCiD Asthana, Saket http://orcid.org/0000-0002-6420-3304
Item Type:	Conference or Workshop Item (Paper)
Uncontrolled Keywords:	Ac conductivity,Correlated barrier hopping,Electrical impedance,Multiferroics
Subjects:	Physics Physics > Fluid mechanics Physics > Pneumatics Physics > Electricity and electronics Physics > Magnetism Physics > Modern physics Physics > Astronomy Astrophysics
Divisions:	Department of Physics
Depositing User:	. LibTrainee 2021
Date Deposited:	27 May 2021 06:10
Last Modified:	27 May 2021 06:10
URI:	http://raiithold.iith.ac.in/id/eprint/7843
Publisher URL:	http://doi.org/10.1063/1.4918093
OA policy:	https://v2.sherpa.ac.uk/id/publication/28395
Related URLs:	Author

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