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Role of (La, Gd) co-doping on the enhanced dielectric and magnetic properties of BiFeO3 ceramics

Suresh, Pittala and Babu, PD and Srinath, S (2016) Role of (La, Gd) co-doping on the enhanced dielectric and magnetic properties of BiFeO3 ceramics. In: CERAMICS INTERNATIONAL, 42 (3). pp. 4176-4184.

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Official URL: http://dx.doi.org/10.1016/j.cerarnint.2015.11.091


The effect of the La3+ and Gd3+ co-doping on the structure, electric and magnetic properties of BiFeO3 (BFO) ceramics are investigated. For the compositions (x=0 and 0 <= y <= 0.15) in the perovskite structured LaxGdyBi1-xFeO3 system, a tiny residual phase of Bi2Fe4O9 is noticed. Such a secondary phase is suppressed with the incorporation of `La' content (x). The magnitude of dielectric constant (epsilon(r) increases progressively by increasing the `La' content from x=0 to 0.15 with a remarkable decrease of dielectric loss. For x=0.15, the system LaxGdyBi1-x(x+y)FeO3 exhibits highest remanent magnetization (M-r) of 0.18 emu/g and coercive magnetic field (H-c) of similar to 1 Tin the presence of external magnetic field of 9 T at 300 K. The origin of enhanced dielectric and magnetic properties of LaxGdyBil (x+y)Fe03 and the role of doping elements, La3+, Gd3+ has been discussed. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

Item Type: Journal Article
Additional Information: Copy right for this article belongs to the ELSEVIER SCI LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
Keywords: Dielectric properties; Magnetic properties; Ceramics; Ball milling
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Date Deposited: 04 Mar 2016 05:25
Last Modified: 04 Mar 2016 05:25
URI: http://eprints.iisc.ac.in/id/eprint/53301

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