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Neutron Diffraction, Mossbauer and Electron Paramagnetic Resonance Studies of Pb0.8Bi0.2Fe0.6Nb0.4O3 Multiferroic

Dadami, Sunanda T and Matteppanavar, Shidaling and Shivaraja, I and Rayaprol, Sudhindra and Angadi, Basavaraj and Sahoo, Balaram (2017) Neutron Diffraction, Mossbauer and Electron Paramagnetic Resonance Studies of Pb0.8Bi0.2Fe0.6Nb0.4O3 Multiferroic. In: 61st DAE-Solid State Physics Symposium, DEC 26-30, 2016, KIIT Univ, Bhubaneswar, INDIA.

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Official URL: http://doi.org/10.1063/1.4980786

Abstract

The Pb0.8Bi0.2Fe0.6Nb0.4O3 (PFN-BFO) multiferroic solid solution was synthesized by single step solid state reaction method with low calcination (700 degrees C/2h) and sintering (800 degrees C/3h) temperatures. Single phase formation was confirmed through X Ray Diffraction (XRD) and Neutron Diffraction (ND) at room temperature (RT). The structural analysis was carried out by Rietveld refinement through the Fullprof program. Refined XRD and ND patterns confirms the monoclinic structure with Cm space group and obtained cell parameters from the ND data are a = 5.6449(8) angstrom, b = 5.6536(5) angstrom, c = 4.0017(6) beta = 30(4). ND data at RT exhibits G-type antiferromagnetic structure. The Mossbauer and Electron Paramagnetic Resonance (EPR) spectroscopy studies were carried out at RT. The isomer shift and the quadrupole splitting of the Mossbauer spectra confirm the Fe in +3 states. An EPR spectrum shows a single broad slight asymmetric line, is an evidence of Fe in +3 states. ND, Mssbauer and EPR studies are the clear evidence of existence of antiferromagnetic ordering near room temperature.

Item Type: Conference Proceedings
Additional Information: 61st DAE-Solid State Physics Symposium, KIIT Univ, Bhubaneswar, INDIA, DEC 26-30, 2016
Department/Centre: Division of Chemical Sciences > Materials Research Centre
Depositing User: Id for Latest eprints
Date Deposited: 11 Nov 2017 05:09
Last Modified: 11 Nov 2017 05:09
URI: http://eprints.iisc.ac.in/id/eprint/58226

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