A comparative study of structural and electrical properties in lead-free BCZT ceramics: Influence of the synthesis method
Электронный научный архив УРФУ
Информация об архиве | Просмотр оригинала| Поле | Значение | |
| Заглавие |
A comparative study of structural and electrical properties in lead-free BCZT ceramics: Influence of the synthesis method
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| Автор |
Coondoo, I.
Panwar, N. Alikin, D. Bdikin, I. Islam, S. S. Turygin, A. Shur, V. Y. Kholkin, A. L. Шур, В. Я. |
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| Тематика |
GRAIN SIZE
LEAD-FREE MICROSCOPY PIEZOELECTRICITY PIEZORESPONSE FORCE BINARY ALLOYS CERAMIC MATERIALS ELASTIC MODULI GRAIN BOUNDARIES MICROSCOPIC EXAMINATION PIEZOELECTRIC CERAMICS PIEZOELECTRICITY RIETVELD REFINEMENT SCANNING PROBE MICROSCOPY SOL-GELS STRUCTURAL CERAMICS COMPLEX IMPEDANCE SPECTROSCOPY GRAIN SIZE LEAD-FREE LEAD-FREE PIEZOELECTRIC CERAMIC PIEZOELECTRIC CHARGE COEFFICIENT PIEZORESPONSE PIEZORESPONSE FORCE MICROSCOPY IMAGES STRUCTURAL AND ELECTRICAL PROPERTIES GRAIN SIZE AND SHAPE |
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| Описание |
In the present work, various grain size phenomena were studied in promising lead-free piezoelectric ceramics (Ba0.85Ca0.15) (Zr0.10Ti0.90)O3 fabricated via chemical and conventional oxide methods. Phase composition was ascertained by the Rietveld refinement. Average grain size estimated from the microstructure was ∼1.5 μm in the sol-gel derived ceramic (SG-BCZT) which was much smaller than that obtained in coarse grained (∼27 μm) sample prepared by solid state method (SS-BCZT). Systematic investigation of various functional properties viz. dielectric, ferroelectric, piezoelectric and impedance emphasized the profound influence of grain size effects. The increase in grain boundary volume fraction enhanced diffuseness while lowered the dielectric peak in SG-BCZT. Similarly, increase in elastic stiffness and progressive hindrance to domain wall movements, resulted in a decrease of the remnant polarization and the associated piezoelectric charge coefficient values in small-grained SG-BCZT sample. Accordingly, higher Young's modulus value of 158.3 GPa was observed in SG-BCZT as compared to 117.9 GPa in SS-BCZT. Local-area piezoresponse force microscopy (PFM) images revealed lamellar domains with periodicity 250 ± 90 nm in SS-BCZT while small sized fractal-like irregular domains with an estimated domain width of 150 ± 60 nm were registered in SG-BCZT. Complex impedance spectroscopy results along with grain boundary conductivity were also guided by grain size effect. The mechanisms of grain size driven effects and their impact on the functional properties were discussed. © 2018 Acta Materialia Inc.
FCT UID/CTM/50011/2013; Fundação para a Ciência e a Tecnologia, FCT: SFRH/BPD/81032/2012; Russian Foundation for Basic Research, RFBR: 17-52-80116-BRICS_a; European Regional Development Fund, FEDER; Government Council on Grants, Russian Federation I. C. thanks the Foundation for Science and Technology , Portugal, for the financial support through postdoctoral research grant SFRH/BPD/81032/2012 . The authors from University of Aveiro acknowledge CICECO-Aveiro Institute of Materials (Ref FCT UID/CTM/50011/2013 ) financed by national funds through the FCT/MEC and, when applicable, co-financed by FEDER under the PT2020 Partnership Agreement. The research was made possible in part by Government of the Russian Federation (Act 211, Agreement 02.A03.21.0006 ) and RFBR (grant 17-52-80116-BRICS_a ). I. C. thanks the Foundation for Science and Technology, Portugal, for the financial support through postdoctoral research grant SFRH/BPD/81032/2012. The authors from University of Aveiro acknowledge CICECO-Aveiro Institute of Materials (Ref FCT UID/CTM/50011/2013) financed by national funds through the FCT/MEC and, when applicable, co-financed by FEDER under the PT2020 Partnership Agreement. The research was made possible in part by Government of the Russian Federation (Act 211, Agreement 02.A03.21.0006) and RFBR (grant 17-52-80116-BRICS_a). |
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| Дата |
2024-04-17T17:43:35Z
2024-04-17T17:43:35Z 2018 |
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| Тип |
Article
Journal article (info:eu-repo/semantics/article) info:eu-repo/semantics/acceptedVersion |
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| Идентификатор |
Coondoo, I., Panwar, N., Alikin, D., Bdikin, I., Islam, S. S., Turygin, A., Shur, V. Y., & Kholkin, A. L. (2018). A comparative study of structural and electrical properties in lead-free BCZT ceramics: Influence of the synthesis method. Acta Materialia, 155, 331-342. https://doi.org/10.1016/j.actamat.2018.05.029
1359-6454 Final All Open Access, Green https://ria.ua.pt/bitstream/10773/36642/1/A%20comparative%20study%20of%20structural%20and%20electrical%20properties%20in%20lead-free%20BCZT.pdf http://elar.urfu.ru/handle/10995/132175 35744523 10.1016/j.actamat.2018.05.029 85048790844 000439675000030 |
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| Язык |
en
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| Права |
Open access (info:eu-repo/semantics/openAccess)
cc-by-nc-nd https://creativecommons.org/licenses/by-nc-nd/4.0/ |
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| Формат |
application/pdf
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| Издатель |
Acta Materialia Inc
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| Источник |
Acta Materialia
Acta Materialia |
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