4.6 Article

Relationship between the Synthesis Method and the Magnetoelectric Properties of Bismuth Sodium-Potassium Titanate/Nickel Cobalt Ferrite Lead-Free Composites

Journal

MATERIALS
Volume 16, Issue 7, Pages -

Publisher

MDPI
DOI: 10.3390/ma16072759

Keywords

magnetoelectric; piezoelectric; magnetic; sol-gel; solid state; Pechini

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The influence of synthesis methods on the properties of Bi-0.5(Na0.8K0.2)(0.5)TiO3-Ni0.5Co0.5Fe2O4 composites was studied. Different routes were used to synthesize each phase, and the composites were prepared with varying fractions. The properties of the composites were evaluated, and it was found that the combination of composition and synthesis routes modulated the magnetoelectric properties.
In this work, the influence of the synthesis methods of piezoelectric and magnetostrictive phases on the final properties of the Bi-0.5(Na0.8K0.2)(0.5)TiO3-Ni0.5Co0.5Fe2O4 composites was studied. Different routes were used to individually synthesize each phase, and the composites were prepared using different fractions for each phase. Composites were sintered, and the structural, microstructural, dielectric, and magnetoelectric properties were evaluated. According to the selected synthesis method employed for each phase, different particle sizes and reactivities of the individual phases were obtained. These differences determined the suitable sintering temperature for each set of composites and were responsible for the final properties. In fact, magnetoelectric properties were modulated by the combination of composition and synthesis routes.

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