Magnetoelectric properties of lead-free Ni0.93Co0.02Mn0.05Fe1.95O4–Na0.5Bi0.5TiO3 multiferroic composites synthesized by spark plasma sintering

Ramana Mudinepalli, Venkata ; Song, S. H. ; Li, J. Q. ; Murty, B. S. (2015) Magnetoelectric properties of lead-free Ni0.93Co0.02Mn0.05Fe1.95O4–Na0.5Bi0.5TiO3 multiferroic composites synthesized by spark plasma sintering Journal of Magnetism and Magnetic Materials, 386 . pp. 44-49. ISSN 0304-8853

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Official URL: http://www.sciencedirect.com/science/article/pii/S...

Related URL: http://dx.doi.org/10.1016/j.jmmm.2015.03.059

Abstract

Lead-free multiferroic ceramic composites of xNi0.93Co0.02Mn0.05Fe1.95O4−(1–x) Na0.5Bi0.5TiO3 (x NCMF−(1–x) NBT, where x = 0.1, 0.2, 0.3, 0.4 and 0.5 mol fraction) were synthesized by Spark Plasma Sintering (SPS) in conjunction with high-energy ball milling. The phases, dielectric, piezoelectric, ferroelectric, magnetic and magnetoelectric properties of the composites were analyzed. The composites were composed of a mixture of spinel and perovskite phases. All the composite samples exhibited both apparent ferroelectric and ferromagnetic characteristics as well as considerable Magnetoelectric (ME) effects. The maximum value of the ME voltage coefficient of the composites was quite high, being up to ∼670 mV cm−1 Oe−1 for the 0.5 NCMF−0.5 NBT composite. Overall, the synthesized composites were promising in terms of electrical, magnetic and magnetoelectric properties, indicating that the SPS is a promising method of fabricating ME composite materials.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
Keywords:Magnetic Properties; Ferroelectric Properties; Magnetoelectric Effect; Ferrites; Spark Plasma Sintering
ID Code:110958
Deposited On:06 Dec 2017 11:09
Last Modified:06 Dec 2017 11:09

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