Magnetic enhancement of ferroelectric polarization in a particulate multiferroic composite derived in situ via additive assisted sintering of a pseudo ternary alloy system BiFeO3-PbTiO3-DyFeO3

Saha, S and Singh, RP and Kumar, A and De, A and Pandey, P and Narayan, B and Basumatary, H and Senyshyn, AR and Ranjan, R (2020) Magnetic enhancement of ferroelectric polarization in a particulate multiferroic composite derived in situ via additive assisted sintering of a pseudo ternary alloy system BiFeO3-PbTiO3-DyFeO3. In: Applied Physics Letters, 116 (14).

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Abstract

We report here the synthesis of a self-grown 0-3 particulate multiferroic composite by controlled precipitation of the ferrimagnetic garnet phase using additive (MnO2) assisted sintering of a multi-cation ferroelectric system (Bi, Pb, Dy)(Fe, Ti)O3. The particulate multiferroic composite derived in this manner exhibits a favorable microstructure, wherein, although the volume fraction of the garnet phase is kept low (6), which helps in retaining the electrical insulating character of the specimen, the number fraction of the garnet grains vis-à -vis the ferroelectric grains is �1:1. The composite shows a nearly �50 increase in saturation polarization at room temperature under a modest magnetic field of 1 T, suggesting a considerable improvement in ferroelectric domain switching due to the efficient strain transfer from the minority garnet grains to the majority piezoelectric grains. © 2020 Author(s).

Item Type:	Journal Article
Publication:	Applied Physics Letters
Publisher:	American Institute of Physics Inc.
Additional Information:	The copyright of this article belongs to the American Institute of Physics Inc.
Keywords:	Additives; Ferroelectric materials; Ferroelectricity; Garnets; Lead titanate; Manganese oxide; Polarization; Sintering; Ternary alloys, Controlled precipitation; Ferroelectric domain switching; Ferroelectric grains; Ferroelectric polarization; Magnetic enhancement; Multiferroic composites; Saturation polarization; Ternary alloy systems, Multiferroics
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	01 Apr 2021 10:42
Last Modified:	01 Apr 2021 10:42
URI:	http://eprints.iisc.ac.in/id/eprint/65222

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