Impact of dopants on the electrical properties in ABO3 perovskite type materials

Sfirloaga, Paula and Malaescu, I. and Poienar, Maria and Marin, C. N. and Vlazan, Paulina: Impact of dopants on the electrical properties in ABO3 perovskite type materials. Proceedings of the International Symposium on Analytical and Environmental Problems, (22). p. 333. (2016)

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Abstract

The ceramics materials with ABO3 structure based on iron or silver doped sodium tantalate, were successfully synthesized using the ultrasonically method with immersed sonotrode in the reaction medium followed by heat treatment at 600°C. Samples were doped with silver for the A site of the perovskite lattice and with iron for the B site. The doping was performed in order to improve the electrical properties through change the crystalline structure and prevent ordering of the oxygen vacancies in these materials. The obtained materials were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), BET analysis, energy-dispersive Xray spectroscopy (EDX) and electrical measurements. Structural analysis shows that the obtained materials have cubic structure and a homogeneous composition, without secondary compounds. Electrical measurements indicate that the presence of metal ions of iron or silver in the structure of NaTaO3 lead to decreases of the gap band energy, resulting in increase of electric conductivity.

Item Type: Article
Journal or Publication Title: Proceedings of the International Symposium on Analytical and Environmental Problems
Date: 2016
Volume: 22
Page Range: p. 333
ISBN: 978-963-306-507-5
Uncontrolled Keywords: Elektrokémia - előadáskivonat, Analitikai kémia - előadáskivonat
Additional Information: Bibliogr.: 333. p. ; összefoglalás angol nyelven
Date Deposited: 2018. Dec. 12. 16:16
Last Modified: 2018. Dec. 12. 16:16
URI: http://acta.bibl.u-szeged.hu/id/eprint/56111

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