The microstructure and dielectric properties of a solid solution (1-x)K0.5Bi0.5TiO3 - xSrTiO3 for x=0.001 ceramics

P. Czaja; J. Suchanicz; M. Wąs; K. Kluczewska-Chmielarz; M. Dziubaniuk

doi:10.1117/12.2523447

14 May 2019 The microstructure and dielectric properties of a solid solution (1-x)K_0.5Bi_0.5TiO₃ - xSrTiO₃ for x=0.001 ceramics

P. Czaja, J. Suchanicz, M. Wąs, K. Kluczewska-Chmielarz, M. Dziubaniuk

Author Affiliations +

Proceedings Volume 11054, Superconductivity and Particle Accelerators 2018; 110540N (2019) https://doi.org/10.1117/12.2523447
Event: Superconductivity and Particle Accelerators 2018, 2018, Krakow, Poland

Abstract

The paper presents the results of measurements of a solid solution (1-x)K_0.5Bi_0.5TiO₃-xSrTiO₃ (KBT-ST) ceramics with (for) x=0.001 for two different sintering temperatures (cases of times sintering): (1) at temperature 1303K for 6 hours (KBT-ST 1) and (2) at temperature 1313K for 6 hours (KBT-ST 2). In both cases, the X-ray diffraction study demonstrated the perovskite structure with a small amount of the second phase. Microstructure research with SEM allowed to observe well-developed grains for both obtained samples. Optical studies using Raman spectroscopy showed that the obtained samples have a local structure consistent with the base material K_0.5Bi_0.5TiO₃ (KBT). Dielectric study of these solid solution ceramics were taken in the temperature range from 293K to 873K and in the frequency range from 10 kHz to 1 MHz. These measurements allowed to observe in both cases a broad maximum similar to that for the base KBT ceramics. It has been observed that if the sintering temperature increase up to 1313K it causes a double increase in the dielectric constant and (it doubles the dielectric constant value and causes) the appearance of additional anomaly on the ε(T) curve at temperature approximately T_d=521K.

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P. Czaja, J. Suchanicz, M. Wąs, K. Kluczewska-Chmielarz, and M. Dziubaniuk "The microstructure and dielectric properties of a solid solution (1-x)K_0.5Bi_0.5TiO₃ - xSrTiO₃ for x=0.001 ceramics", Proc. SPIE 11054, Superconductivity and Particle Accelerators 2018, 110540N (14 May 2019); https://doi.org/10.1117/12.2523447

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