Significant Improvement in Magnetic and Magnetoelectric Characteristics of (0.95 − x )Ba0.9Ca0.1TiO3-0.05Na0.5Bi0.5TiO3- x CoFe2O4 Ceramics

Multifunctional materials with high magnetic, electrical, and magnetoelectric (ME) characteristics play an important role in development of data storage devices. Herein, multi-phase ([Formula Omitted])Ba0.9Ca0.1TiO3 (BCT)-0.05Na0.5Bi0.5TiO3 (NBT)-[Formula Omitted]CoFe2O4 (CFO) ceramics were prepared...

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Bibliographic Details
Published in:IEEE transactions on magnetics 2022-01, Vol.58 (2), p.1
Main Authors: Jain, Aditya, Kumar, Ajay, Gupta, Neha
Format: Article
Language:English
Subjects:
Ceramics
Cobalt ferrites
Computer storage devices
Data storage
Electrical properties
Electronic devices
Energy storage
Flux density
Heterogeneous structure
Magnetic properties
Magnetic saturation
Magnetism
Multifunctional materials
Rietveld method
Spintronics
Structural analysis
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Summary:Multifunctional materials with high magnetic, electrical, and magnetoelectric (ME) characteristics play an important role in development of data storage devices. Herein, multi-phase ([Formula Omitted])Ba0.9Ca0.1TiO3 (BCT)-0.05Na0.5Bi0.5TiO3 (NBT)-[Formula Omitted]CoFe2O4 (CFO) ceramics were prepared by a two-stage mechanochemical activation technique. The objective of this study is to develop a multifunctional material with improved multiferroic characteristics. The structural analysis by the Rietveld method shows the presence of heterogeneous structure without any impurity phase. The incorporation of CFO in 0.95BCT-0.05NBT has resulted in significant improvement in magnetic and ME characteristics without significantly hampering the electrical properties. The sample with [Formula Omitted] has shown high saturation magnetization of 8.26 emu/g along with moderately high ME coefficient of 5.411 mV/cm[Formula Omitted]Oe. In addition, the energy storage performance of all the studied samples has also been investigated and the optimized sample [Formula Omitted] presents a large discharge energy density of 2.249 J/cm3 and moderately high energy efficiency of 63.8% at 388 kV/cm. The results obtained in this work suggest a significant influence of CFO substitution on the magnetic characteristics of BCT-NBT ceramics, which subsequently indicate their potential applications in spintronics, magnetic memory storage, and electrical energy storage devices.
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.2021.3131511