INFLUENCE OF LANTHANUM DOPANT ON THE STRUCTURE AND ELECTRIC PROPERTIES OF BaBi2Nb2O9 CERAMICS

被引：4
|
作者：
Adamczyk-Habrajska, M. [1 ]
Goryczka, T. [1 ]
Szalbot, D. [1 ]
Dzik, J. [1 ]
Rerak, M. [1 ]
Bochenek, D. [1 ]
机构：
[1] Univ Silesia, Fac Sci & Technol, Inst Mat Engn, 12 Zytnia Str, PL-41200 Sosnowiec, Poland
来源：
ARCHIVES OF METALLURGY AND MATERIALS | 2020年 / 65卷 / 01期
关键词：
Ferroelectric relaxor; Ceramics; Impedance spectroscopy; IMPEDANCE SPECTROSCOPY; BEHAVIOR; CRYSTAL;
D O I：
10.24425/amm.2019.131116
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
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.
引用
收藏
页码：207 / 214
页数：8
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