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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/13570
Title: Compositional effects on structural, dielectric, ferroelectric and transport properties of Ba1-x (Bi0.5Li0.5)xTiO3 ceramics
Authors: Rawat M.
Yadav, Kamlesh Kumar
Published in: Materials Chemistry and Physics
Abstract: Single-phase Ba1-x (Bi0.5Li0.5)xTiO3 ceramics were prepared by conventional solid state reaction method, which shows tetragonal symmetry (space group P4mm). The crystal structure was refined by Rietveld analysis. The lattice parameters and satisfactory values of the Rietveld parameters, Rf, Rwp and RBragg were calculated by using X-ray diffraction data. The average grain size was found to lie in the range of 350 nm e720 nm as calculated by linear intercept method in Field Effect Scanning Electron Micrographs. As the (Bi0.5Li0.5)2+ content increases, the curie temperature of Ba1-x (Bi0.5Li0.5)xTiO3ceramics was found to increase. The remnant polarization (2Pr) increases monotonously as the (Bi0.5Li0.5)2+ content increases and the highest value of 2Pr (=18.6 mC cm-2) and 2Ec (=15.37 kV cm-1) were obtained for x = 0.08 of (Bi0.5Li0.5)2+. FT-IR spectra show broad absorption bands corresponding to the metal oxygen bond. Complex impedance plots of Ba1-x(Bi0.5Li0.5)xTiO3 ceramics exhibit two semicircular arcs which are explained by the grain and grain boundary effect of the bulk ceramics. © 2014 Elsevier B.V. All rights reserved.
Citation: Materials Chemistry and Physics (2014), 148(3): 655-663
URI: https://doi.org/10.1016/j.matchemphys.2014.08.031
http://repository.iitr.ac.in/handle/123456789/13570
Issue Date: 2014
Publisher: Elsevier Ltd
Keywords: Dielectric properties
Ferroelectricity
Rietveld analysis
Sintering
ISSN: 2540584
Author Scopus IDs: 54896056200
7005825645
Author Affiliations: Rawat, M., Smart Materials Research Laboratory, Department of Physics, Indian Institute of Technology Roorkee, Roorkee, 247667, India
Yadav, K.L., Smart Materials Research Laboratory, Department of Physics, Indian Institute of Technology Roorkee, Roorkee, 247667, India
Funding Details: Authors would like to thank Council of Scientific and Industrial Research , New Delhi, India for financial support under the grant 03(1272)/13/EMR-II dated 12-04-2013.
Corresponding Author: Rawat, M.; Smart Materials Research Laboratory, Department of Physics, Indian Institute of Technology RoorkeeIndia; email: rawat_meera001@rediffmail.com
Appears in Collections:Journal Publications [PH]

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