Structural and Electric Properties of Ba-Fe-Ta-Na-Bi-Ti-O Ceramic System

The X-ray diffraction, microstructure, impedance, electric modulus, and ac-conductivity of Ba(Fe1/2Ta1/2)O3–(Na1/2Bi1/2)TiO3 solid-solutions were studied utilising a traditional high-temperature mixed-oxide technique. The phase-formations of the solid-solutions were determined utilising X-ray data,...

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Veröffentlicht in:Materials science forum 2022-11, Vol.1074, p.53-59
Hauptverfasser: Yadav, Anjana, Chandra, Kumar P., Prasad, Kamal, Kulkarni, Ajit R.
Format: Artikel
Sprache:eng
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Zusammenfassung:The X-ray diffraction, microstructure, impedance, electric modulus, and ac-conductivity of Ba(Fe1/2Ta1/2)O3–(Na1/2Bi1/2)TiO3 solid-solutions were studied utilising a traditional high-temperature mixed-oxide technique. The phase-formations of the solid-solutions were determined utilising X-ray data, while SEM micrographs revealed a non-uniform dispersion of grains in the sample of unequal size (~1 – 20 mm). In all of the developed solid-solutions, the frequency (1Hz - 1MHz) dependence of imaginary and real parts of electric impedance in the temperature region of 50 and 500°C showed the NTCR character and hopping type of electrical conduction. The modulus spectrum variation was intrigued by the hopping mechanism for charge transport (temperature-dependent) in the samples with non-Debye type of behaviour. Besides, the low electrical conductivity of these solid-state solutions makes them ideal for industrial applications, particularly as capacitors.
ISSN:0255-5476
1662-9752
1662-9752
DOI:10.4028/p-6902r9