Investigations of Electrical Properties of Nd Substituted Bifeo3 Multiferroic Ceramics

Rao, T D and Asthana, Saket (2013) Investigations of Electrical Properties of Nd Substituted Bifeo3 Multiferroic Ceramics. In: International Conference on Recent Trends in Applied Physics and Material Science, RAM 2013, 1-2, February 2013, Bikaner, Rajasthan; India;.

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Polycrystalline BiFeO3 (BFO) and Bi0.9Nd 0.1FeO3 (BNFO) compounds were synthesized by conventional solid-state route. All the compounds were crystallized in rhombohedral structure with R3c (IUCr No. 161) space group. Negative temperature coefficient of Resistance character has been observed from Complex impedance studies. ac conductivity in these compounds follows universal power law. Correlated Barrier Hopping (CBH) model has been employed to explain the charge carries transport mechanism. Density of states near Fermi level observed to be decreasing with the Nd substitution. Improved insulating character and decrease in density of states in BNFO compound suggested that possible reduction in oxygen vacancies. Activation energies calculated from Arrhenius plots revealed that electronic hopping, oxygen vacancies movements are the contributors to the ac 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: A.C conductivity; Correlated Barrier Hopping; Electrical Impedance; Multiferroics
Subjects: Physics
Divisions: Department of Physics
Depositing User: Team Library
Date Deposited: 25 Nov 2014 04:50
Last Modified: 29 Aug 2017 10:06
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