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X-ray peak broadening analysis and dielectric studies of BCT ceramics; comparison of sol–gel and solid solution methods.

In this study, nano- and micro- Ba1 − xCaxTiO3 powders (where x = 0, BT; 0.01, BCT1; 0.03, BCT3; and 0.05, BCT5) were synthesized through the sol–gel and solid-solution-reaction methods, respectively. The effects of synthesis methods and Ca concentrations on the prepared BCT samples’ structural and...

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Main Authors: Khorsand Zak, Ali, Hashim, Abdul Manaf, Hashim, Abd. Manaf
Format: Article
Published: Springer 2023
Subjects:
Q Science (General)
Online Access:http://eprints.utm.my/106914/
http://dx.doi.org/10.1007/s10854-023-10667-5
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spelling my.utm.1069142024-08-06T06:08:45Z http://eprints.utm.my/106914/ X-ray peak broadening analysis and dielectric studies of BCT ceramics; comparison of sol–gel and solid solution methods. Khorsand Zak, Ali Hashim, Abdul Manaf Hashim, Abd. Manaf Q Science (General) In this study, nano- and micro- Ba1 − xCaxTiO3 powders (where x = 0, BT; 0.01, BCT1; 0.03, BCT3; and 0.05, BCT5) were synthesized through the sol–gel and solid-solution-reaction methods, respectively. The effects of synthesis methods and Ca concentrations on the prepared BCT samples’ structural and dielectric properties were subsequently investigated. The calcination temperature was 1000 °C based on thermogravimetric analysis results. In addition, X-ray diffraction (XRD) indicated a tetragonal phase for the samples. The XRD results were analyzed using Williamson-Hall and size strain plot methods to investigate the effect of calcium concentrations and synthesis methods on the strain and crystalline sizes of the BCT materials. Ca concentration increases were found to increase both uniform and non-uniform strains, whereas BCT-nano samples exhibited a significantly greater non-uniform strain than BCT micro samples. The grains and particle morphologies were studied by field emission scanning electron microscopy and transmission electron microscopy. It was observed that the particle size of the nanopowders was between 50 and 100 nm, and the grain sizes were between 20 and 40 μm. The prepared pellets’ relative permittivity (dielectric constant) variation at 1250 °C was measured and analyzed through the Curie-Weiss law. The results indicated that the ferroelectric behavior of BT was changed to relaxor behavior for BCT5. Springer 2023-06 Article PeerReviewed Khorsand Zak, Ali and Hashim, Abdul Manaf and Hashim, Abd. Manaf (2023) X-ray peak broadening analysis and dielectric studies of BCT ceramics; comparison of sol–gel and solid solution methods. Journal of Materials Science: Materials in Electronics, 34 (16). NA-NA. ISSN 0957-4522 http://dx.doi.org/10.1007/s10854-023-10667-5 DOI:10.1007/s10854-023-10667-5
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
topic Q Science (General)
spellingShingle Q Science (General)
Khorsand Zak, Ali
Hashim, Abdul Manaf
Hashim, Abd. Manaf
X-ray peak broadening analysis and dielectric studies of BCT ceramics; comparison of sol–gel and solid solution methods.
description In this study, nano- and micro- Ba1 − xCaxTiO3 powders (where x = 0, BT; 0.01, BCT1; 0.03, BCT3; and 0.05, BCT5) were synthesized through the sol–gel and solid-solution-reaction methods, respectively. The effects of synthesis methods and Ca concentrations on the prepared BCT samples’ structural and dielectric properties were subsequently investigated. The calcination temperature was 1000 °C based on thermogravimetric analysis results. In addition, X-ray diffraction (XRD) indicated a tetragonal phase for the samples. The XRD results were analyzed using Williamson-Hall and size strain plot methods to investigate the effect of calcium concentrations and synthesis methods on the strain and crystalline sizes of the BCT materials. Ca concentration increases were found to increase both uniform and non-uniform strains, whereas BCT-nano samples exhibited a significantly greater non-uniform strain than BCT micro samples. The grains and particle morphologies were studied by field emission scanning electron microscopy and transmission electron microscopy. It was observed that the particle size of the nanopowders was between 50 and 100 nm, and the grain sizes were between 20 and 40 μm. The prepared pellets’ relative permittivity (dielectric constant) variation at 1250 °C was measured and analyzed through the Curie-Weiss law. The results indicated that the ferroelectric behavior of BT was changed to relaxor behavior for BCT5.
format Article
author Khorsand Zak, Ali
Hashim, Abdul Manaf
Hashim, Abd. Manaf
author_facet Khorsand Zak, Ali
Hashim, Abdul Manaf
Hashim, Abd. Manaf
author_sort Khorsand Zak, Ali
title X-ray peak broadening analysis and dielectric studies of BCT ceramics; comparison of sol–gel and solid solution methods.
title_short X-ray peak broadening analysis and dielectric studies of BCT ceramics; comparison of sol–gel and solid solution methods.
title_full X-ray peak broadening analysis and dielectric studies of BCT ceramics; comparison of sol–gel and solid solution methods.
title_fullStr X-ray peak broadening analysis and dielectric studies of BCT ceramics; comparison of sol–gel and solid solution methods.
title_full_unstemmed X-ray peak broadening analysis and dielectric studies of BCT ceramics; comparison of sol–gel and solid solution methods.
title_sort x-ray peak broadening analysis and dielectric studies of bct ceramics; comparison of sol–gel and solid solution methods.
publisher Springer
publishDate 2023
url http://eprints.utm.my/106914/
http://dx.doi.org/10.1007/s10854-023-10667-5
_version_ 1806688593061609472
score 13.211869

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