Enhanced electric field tunable magnetic properties of lead-free Na0.5Bi0.5TiO3-MnFe2O4 multiferroic composites

Praveena, K and Varma, KBR (2014) Enhanced electric field tunable magnetic properties of lead-free Na0.5Bi0.5TiO3-MnFe2O4 multiferroic composites. In: JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS, 25 (12). pp. 5403-5409.

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Abstract

Strong magnetoelectric (ME) interaction was exhibited at both dc and microwave frequencies in a lead-free multiferroic particulate composites of Na0.5Bi0.5TiO3 (NBT) and MnFe2O4 (MFO) multiferroic, which were prepared by sol-gel route. The room temperature permeability measurements were carried out in the frequency range of 1 MHz-1 GHz. A systematic study of structural, magnetic and ME properties were undertaken. The room temperature ferromagnetic resonance (FMR) was studied. Strong ME coupling is demonstrated in 70NBT-30MFO composite by an electrostatically tunable FMR field shift up to 428 Oe (at E = 4 kV/cm), which increases to a large value of 640 Oe at E = 8 kV/cm. Furthermore, these lead-free multiferroic composites exhibiting electrostatically induced magnetic resonance field at microwave frequencies provide great opportunities for electric field tunable microwave devices.

Item Type:	Journal Article
Publication:	JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
Publisher:	SPRINGER
Additional Information:	Copyright for this article belongs to the SPRINGER, VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
Department/Centre:	Division of Chemical Sciences > Materials Research Centre
Date Deposited:	26 Dec 2014 06:43
Last Modified:	26 Dec 2014 06:43
URI:	http://eprints.iisc.ac.in/id/eprint/50512

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