Evidence for Room-Temperature Weak Ferromagnetic and Ferroelectric Ordering in Magnetoelectric Pb(Fe0.634W0.266Nb0.1)O-3 Ceramic

Matteppanavar, Shidaling and Shivaraja, I and Rayaprol, Sudhindra and Angadi, Basavaraj and Sahoo, Balaram (2017) Evidence for Room-Temperature Weak Ferromagnetic and Ferroelectric Ordering in Magnetoelectric Pb(Fe0.634W0.266Nb0.1)O-3 Ceramic. In: JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM, 30 (5). pp. 1317-1325.

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Abstract

We report the evidence of weak ferromagnetic and ferroelectric ordering in polycrystalline Pb(Fe-0.634 W0.266Nb0.1)O-3 (0.8(PbFe2/3W1/3)O-3-0.2Pb(Fe1/2Nb1/2) O-3) (PFWN) ceramic at room temperature. The Pb(Fe-0.634 W0.266Nb0.1)O(3)solid solution synthesized through the columbite method. The obtained single-phase Pb(Fe-0.634 W0.266Nb0.1)O(3)ceramic was subjected to X-ray diffraction, neutron diffraction, magnetization, Mossbauer spectroscopy, and ferroelectric measurements. The X-ray diffraction and neutron diffraction pattern confirms the formation of single phase without any traces of pyrochlore phases, having cubic structure with Pm-3m space group. The Rietveld refinements were carried out on both patterns, and ND data confirms the G-type antiferromagnetic structure with propagation vector (k = 1/2, 1/2, and 1/2). However, along with the antiferromagnetic ordering of the Fe spins, we also observed the existence of weak ferromagnetism. This result was confirmed through (i) a clear opening of hysteresis (M - H) loop, (ii) bifurcation of the field-cooled (FC) and zero-field-cooled (ZFC) susceptibilities, (iii) spin-glass behavior, and (iv) Mossbauer spectroscopy.

Item Type:	Journal Article
Publication:	JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM
Publisher:	SPRINGER, 233 SPRING ST, NEW YORK, NY 10013 USA
Additional Information:	Copy right for this article belongs to the SPRINGER, 233 SPRING ST, NEW YORK, NY 10013 USA
Department/Centre:	Division of Chemical Sciences > Materials Research Centre
Date Deposited:	20 May 2017 05:23
Last Modified:	20 May 2017 05:23
URI:	http://eprints.iisc.ac.in/id/eprint/56894

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