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Influence of Cr3+ doping on multiferroic properties in the morphotropic phase boundary compositions of BiFeO3-PbTiO3 system

Kumar, Naveen and Narayan, Bastola and Mehrotra, Tarang and Kumar, Amit and Kumar, Manoj and Ranjan, Rajeev and Kumar, Sanjeev and Shah, Jyoti and Kotnala, R K (2019) Influence of Cr3+ doping on multiferroic properties in the morphotropic phase boundary compositions of BiFeO3-PbTiO3 system. In: JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS, 30 (17). pp. 16539-16547.

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Official URL: https://dx.doi.org/10.1007/s10854-019-02030-4

Abstract

In this paper, we have investigated the effect of Cr3+ substitution on the crystal structure, microstructure, dielectric and magnetic behavior of the morphotropic phase boundary (MPB) composition of the multiferroic ceramic 0.675BiFe((1-x))Cr(x)O(3)-0.325PbTiO(3) (x = 0, 0.02 and 0.05). The average grain size of the specimens increased from similar to 150 nm for x = 0 to 470 nm for x = 0.05. Rietveld refinement analysis of the X-Ray powder diffraction patterns confirmed the coexistence of multiphase i.e. monoclinic Cc and tetragonal P4 mm polymorphs for all the compositions. The system exhibits weak ferromagnetism for x = 0.05. We estimated the magnetoelectric interaction constant (gamma similar to 0.31) for x = 0.05 by Ginzburg-Landau theory. The value of magnetoelectric coupling coefficient is found to be 0.054 mV/cm-Oe, 0.073 mV/cm-Oe, 0.133 mV/cm-Oe for x = 0, 00.02 and 0.05, respectively. High temperature dielectric data also reveals that Curie temperature decreases with increasing Cr3+ concentration.

Item Type: Journal Article
Additional Information: copyright for this article belongs to SPRINGER
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Depositing User: Id for Latest eprints
Date Deposited: 21 Oct 2019 10:35
Last Modified: 21 Oct 2019 10:35
URI: http://eprints.iisc.ac.in/id/eprint/63732

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