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Symmetry 2018, 10(3), 59; https://doi.org/10.3390/sym10030059

Microstructure and Properties of the Ferroelectric-Ferromagnetic PLZT-Ferrite Composites

1
Faculty of Computer Science and Material Science, Institute of Technology and Mechatronics, University of Silesia in Katowice, 12 Żytnia St., 41–200 Sosnowiec, Poland
2
Faculty of Computer Science and Material Science, Institute of Material Science, University of Silesia in Katowice, 1a, 75 Pułku Piechoty St., 41–500 Chorzów, Poland
*
Author to whom correspondence should be addressed.
Received: 29 December 2017 / Revised: 19 February 2018 / Accepted: 28 February 2018 / Published: 6 March 2018
(This article belongs to the Special Issue Multiferroic Dynamics)
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Abstract

The paper presents the technology of ferroelectric-ferromagnetic ceramic composites obtained from PLZT powder (the chemical formula Pb0.98La0.02(Zr0.90Ti0.10)0.995O3) and ferrite powder (Ni0.64Zn0.36Fe2O4), as well as the results of X-ray powder-diffraction data (XRD) measurement, microstructure, dielectric, ferroelectric, and magnetic properties of the composite samples. The ferroelectric-ferromagnetic composite (P-F) was obtained by mixing and the synthesis of 90% of PLZT and 10% of ferrite powders. The XRD test of the P-F composite shows a two-phase structure derived from the PLZT component (strong peaks) and the ferrite component (weak peaks). The symmetry of PLZT was identified as a rhombohedral ferroelectric phase, while the ferrite was identified as a spinel structure. Scanning electron microscope (SEM) microstructure analysis of the P-F ceramic composites showed that fine grains of the PLZT component surrounded large ferrite grains. At room temperature P-F composites exhibit both ferroelectric and ferromagnetic properties. The P-F composite samples have lower values of the maximum dielectric permittivity at the Curie temperature and a higher dielectric loss compared to the PLZT ceramics, however, the exhibit overall good multiferroic properties. View Full-Text
Keywords: ferroelectromagnetics; multiferroics; ceramic composites; perovskite-type materials ferroelectromagnetics; multiferroics; ceramic composites; perovskite-type materials
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Bochenek, D.; Niemiec, P.; Korzekwa, J.; Durtka, B.; Stokłosa, Z. Microstructure and Properties of the Ferroelectric-Ferromagnetic PLZT-Ferrite Composites. Symmetry 2018, 10, 59.

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