Understanding the effect of synthesis and sintering temperature on the functional properties of barium titanate/cobalt ferrite composites

Author:

Suljagic Marija1ORCID,Kremenovic Aleksandar2ORCID,Petronijevic Ivan3ORCID,Dzunuzovic Adis4ORCID,Mirkovic Miljana5ORCID,Pavlovic Vladimir6ORCID,Andjelkovic Ljubica1

Affiliation:

1. University of Belgrade, Institute of Chemistry, Technology and Metallurgy, Department of Chemistry, Belgrade, Serbia

2. Faculty of Mining and Geology, University of Belgrade, Belgrade, Serbia

3. Faculty of Physics, University of Belgrade, Belgrade, Serbia

4. Institute for Multidisciplinary Research, University of Belgrade, Belgrade, Serbia

5. Department of Materials „Vinča" Institute of Nuclear Sciences - National Institute of thе Republic of Serbia, University of Belgrade, Belgrade, Serbia

6. University of Belgrade, Faculty of Agriculture, Zemun, Belgrade, Serbia

Abstract

To investigate the effect of synthesis procedure and sintering temperature on the functional properties of perovskite/spinel ceramics, BaTiO3/CoFe2O4 composites were prepared by thermal decomposition, coprecipitation, and microemulsion method, and sintered at 1150?C and 1300?C. The phase composition and morphology of as-prepared powders as well as sintered ceramics were thoroughly examined by X-ray powder diffraction (XRPD) and scanning electron microscopy (SEM) coupled with electron dispersive spectroscopy (EDS). The dielectric and ferroelectric measurements were performed in detail. Generally, the samples sintered at 1300?C had better performances than those sintered at 1150?C. The composite synthesized by thermal decomposition and sintered at 1300?C stands out among other prepared BaTiO3/CoFe2O4 ceramics, owing to high stability in the wide frequency range and low leakage currents. The obtained results indicate that such composite might be successfully applied as a functional multiferroic.

Funder

Ministry of Education, Science and Technological Development of the Republic of Serbia

Publisher

National Library of Serbia

Subject

Materials Chemistry,Metals and Alloys,Condensed Matter Physics,Ceramics and Composites

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