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

The paper presents the results of measurements of a solid solution (1-x)K0.5Bi0.5TiO3-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 K0.5Bi0.5TiO3 (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 Td=521K.

Paper Details

Date Published: 14 May 2019
PDF: 6 pages
Proc. SPIE 11054, Superconductivity and Particle Accelerators 2018, 110540N (14 May 2019); doi: 10.1117/12.2523447
Show Author Affiliations
P. Czaja, Cracow Pedagogical Univ. (Poland)
J. Suchanicz, Cracow Pedagogical Univ. (Poland)
M. Wąs, Cracow Pedagogical Univ. (Poland)
K. Kluczewska-Chmielarz, Cracow Pedagogical Univ. (Poland)
M. Dziubaniuk, AGH Univ. of Science and Technology (Poland)

Published in SPIE Proceedings Vol. 11054:
Superconductivity and Particle Accelerators 2018
Dariusz Bocian; Ryszard S. Romaniuk, Editor(s)

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