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

T, Durga Rao and Tangavelua, K and Asthana, Saket (2015) The impedance and conductivity studies on BiFeO3 and 0.90BiFeO3-0.10Bi0.5Na0.5TiO3 ceramics. In: SOLID STATE PHYSICS: Proceedings of the 59th DAE Solid State Physics Symposium 2014, 16–20 December 2014, Tamilnadu, India.

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Polycrystalline BiFeO 3 and 0.90BiFeO 3 -0.10Bi 0.5 Na 0.5 TiO 3 compounds 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 0.90BiFeO 3 - 0.10Bi 0.5 Na 0.5 TiO 3 compound. 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 CreatorsORCiD
Asthana, Saket
Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Multiferroics, Electrical impedance, ac conductivity, Correlated barrier hopping. PACS: 72.20.-i.
Subjects: Physics
Divisions: Department of Physics
Depositing User: Team Library
Date Deposited: 29 Jun 2015 09:26
Last Modified: 29 Aug 2017 10:05
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