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Thermal, magnetic and electrical properties of Tb1-xDyxMnO3 multiferroics

Kumar, Pavan N and Jitender, Thakur and Laxmi, Vijaya and Reddy, Venugopal P (2016) Thermal, magnetic and electrical properties of Tb1-xDyxMnO3 multiferroics. In: JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 401 . pp. 860-869.

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Official URL: http://dx.doi.org/10.1016/j.jmmm.2015.10.120

Abstract

A series of multiferroic materials with the compositional formula, Tb1 - xDyxMnO3 (where x=0, 0.1, 0.2, 0.3 and 0.4) were prepared by the sol gel method. After characterizing the samples structurally, a systematic investigation of specific heat, magnetization and dielectric properties over the temperature range, 4-300 K, was undertaken. Based on these studies, it was found that all the samples exhibit a transition at 40 K and the observed behavior may be attributed to the ordering of Mn3+ ions. Further, all the five samples are found to exhibit a ferroelectric transition in the temperature range 20-24 K. Finally, yet another transition was also exhibited by all the samples at temperatures below 10 K and is attributed to the antiferromagnetic (AF) ordering of rare-earth ionic moments. The magnetic entropy of all the samples was also computed with the help of their heat capacity data. (C) 2015 Elsevier B.V. All rights reserved.

Item Type: Journal Article
Additional Information: Copy right for this article belongs to the ELSEVIER SCIENCE BV, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Keywords: Magnetic materials; Sol-gel growth; X-ray diffraction; Dielectric properties; Magnetic properties; Specific heat
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Depositing User: Id for Latest eprints
Date Deposited: 14 Jan 2016 05:58
Last Modified: 14 Jan 2016 05:58
URI: http://eprints.iisc.ac.in/id/eprint/53126

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