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Title: Influence of lanthanum dopant on the structure and electric properties of BaBi2Nb2O9 ceramics
Authors: Adamczyk-Habrajska, Małgorzata
Goryczka, Tomasz
Szalbot, Diana
Dzik, Jolanta
Rerak, Michał
Bochenek, Dariusz
Keywords: Ferroelectric relaxor; Ceramics; Impedance spectroscopy
Issue Date: 2020
Citation: "Archives of Metallurgy and Materials" 2020, iss. 1, s. 207-214
Abstract: The paper reports the consequences of lanthanum modifications of barium bismuth niobiate (BaBi2Nb2O9) ceramics. The discussed materials were prepared by solid state synthesis and a one-step sintering process. The investigations are focused on dielectric aspects of the modification. The presented results reveal that the trivalent lanthanum ions incorporate twovalent barium ions, which is connected with the creation of A-site cationic vacancies as well as oxygen vacancies. Such a scenario results in significant decreasing in grain boundaries resistivity. The activation energy of grain boundaries conductivity is significantly reduced in the case of lanthanum admixture.
DOI: 10.24425/amm.2019.131116
ISSN: 1733-3490
Appears in Collections:Artykuły (WNŚiT)

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