期刊
FERROELECTRICS
卷 576, 期 1, 页码 1-7出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/00150193.2021.1888254
关键词
Multiferroics; bismuth ferrite; synthesis; ceramics; dielectric properties
资金
- RFBR [20-08-00242A, FZNZ-2020-0002]
- UMNIK project [14057GU/2019]
- Ministry of Higher Education and Scientific Research
The study revealed that with an increase in the La concentration, the dielectric permittivity ε' increases and the tg delta decreases.
Nanostructured ceramic samples of the composition Bi1-xLaxFeO3 (BLFO) at x = 0, 0.05, 0.10, 0.15, and 0.2 (BFO-0, BLFO-5, BLFO-10, BLFO-15, and BLFO-20) were produced from nanopowders by spark plasma sintering. The structure and dielectric properties of BLFO ceramics were studied in a wide range of temperatures and frequencies. Phase analysis showed that the BFO-0 sample contained less than 5% impurity phases, decreasing to zero at 5% doping with La. The temperature dependences of the dielectric permittivity epsilon'(T) revealed a number of anomalies. It has been shown that with an increase in the La concentration, epsilon' increases and tg delta decreases.
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