Comment on Hole-pinned defect-dipoles induced colossal permittivity in Bi doped SrTiO3 ceramics with Sr deficiency
authors Tkach, A; Okhay, O
nationality International
journal JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
author keywords SrTiO3 ceramics; Doped dielectrics; Perovskite structure; Giant permittivity
keywords RELAXATION
abstract With this contribution, as a comment to the publication in Journal of Materials Science & Technology 44 (2020) 54, reporting giant dielectric response, structural characterization and numerical simulations in Sr1-1.5xBixTiO3 ceramics, we show that the reported results are rather contradicting and not well analysed, while the suggested mechanism for the giant permittivity response is not valid or doubtful and has to be reconsidered. Moreover, many details and data are missing making impossible not only to call the obtained results very suitable for practical application but even to reproduce them. (C) 2021 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
publisher JOURNAL MATER SCI TECHNOL
issn 1005-0302
year published 2021
volume 65
beginning page 151
ending page 153
digital object identifier (doi) 10.1016/j.jmst.2020.05.064
web of science category 3
subject category Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering
unique article identifier WOS:000609935300024
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journal impact factor 6.155
5 year journal impact factor 5.275
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