Magnetic, ferroelectric, and magnetodielectric properties of BiFeO3 ceramic co-doped with Eu and Gd

Kumar, Amit and Yadav, KL and Kumar, Sonu and Kumar, Naveen and Mishra, Anupam and Shankar, Uma and Mehrotra, Tarang and Sharma, Gyaneshwar and Kumar, Rajendra and Das Adhikary, Gobinda (2019) Magnetic, ferroelectric, and magnetodielectric properties of BiFeO3 ceramic co-doped with Eu and Gd. In: JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 124 . pp. 19-23.

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Abstract

Polycrystalline samples of Bi0.9Eu0.1FeO3, Bi0.9Gd0.1FeO3, and Bi0.9Eu0.05Gd0.05FeO3 ceramics were synthesized by a solid-state reaction method, followed by rapid quenching to room temperature. Bio(0.9)Eu(0.1)FeO(3) shows higher magnetization than Bi0.9Gd0.1FeO3 and Bi5.9Eu0.05Gd0.05FeO3. This can be explained by lattice distortion, and the change in the statistical distribution of Fe3+ /Fe2+. Similarly, ferroelectric polarization of Bi0.9Eu0.1FeO3 was found to be higher than that of Bi0.9Gd0.1FeO3 and Bi0.9Eu0.05Gd0.05FeO3. However, the absolute value of the magnetocapacitance of Bi0.9Eu0.05Gd0.05FeO3 (similar to 1.6%) was found to be higher than that of Bi0.9Eu0.1FeO3 (similar to 1.3%) and Bi0.9Gd0.1FeO3 (similar to 1.1%). In addition, the quadratic component of magnetoelectric coupling is higher for Bi0.9Eu0.05Gd0.05FeO3, which makes Bi0.9Eu0.05Gd0.05FeO3 attractive for further study.

Item Type:	Journal Article
Publication:	JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
Publisher:	PERGAMON-ELSEVIER SCIENCE LTD
Additional Information:	Copyright for this article belongs to PERGAMON-ELSEVIER SCIENCE LTD
Keywords:	Ceramics;Multiferroic;Bismuth ferrite;Magnetocapacitance
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	07 Dec 2018 06:58
Last Modified:	07 Dec 2018 06:58
URI:	http://eprints.iisc.ac.in/id/eprint/61210

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