Degradation mechanisms of the Pb1−хBaхZr0,53Ti0,47O3−δ ferroelectric structure
The present paper is devoted to the study of the structural degradation mechanisms of ferroelectric having Pb1−хBaхZr0,53Ti0,47O3−δ composition. On the base of investigations of the influence of temperature-time synthesis modes on the structural perfection degree of the Pb0,85Ba0,25Zr0,53Ti0,47O3−8...
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| Format: | Article |
| Language: | Russian |
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Educational institution «Belarusian State University of Informatics and Radioelectronics»
2020-11-01
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| Series: | Doklady Belorusskogo gosudarstvennogo universiteta informatiki i radioèlektroniki |
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| Online Access: | https://doklady.bsuir.by/jour/article/view/2880 |
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| author | L. I. Hurski A. V. Petrov D. A. Golosov P. N. Kireev N. A. Kalanda M. V. Yarmolich |
| author_facet | L. I. Hurski A. V. Petrov D. A. Golosov P. N. Kireev N. A. Kalanda M. V. Yarmolich |
| author_sort | L. I. Hurski |
| collection | DOAJ |
| description | The present paper is devoted to the study of the structural degradation mechanisms of ferroelectric having Pb1−хBaхZr0,53Ti0,47O3−δ composition. On the base of investigations of the influence of temperature-time synthesis modes on the structural perfection degree of the Pb0,85Ba0,25Zr0,53Ti0,47O3−8 compound, it has been determined, that a shift of the position of the XRD reflex from the plane (112) and its broadening, which is caused by the amorphization and an increase of the elastic stresses in the material crystal lattice during the annealing of the compound. It has been demonstrated that at the increase of the annealing temperature up to 520 K, the crystal lattice of the ferroelectric is deformed by means of a formation of VPb,V0 and [V О •• 2Pb / i ] defects, which is realized in a decrease of the I(hkl) intensity relationship of the XRD reflexes from the planes (112) and (211). It has been supposed that an excess of lead is produced on the grain boundaries as a result of this annealing process, which promotes a local manifestation of the liquid phase. This phase which takes place in the transfer of the material components, not only increases the interaction of the reacting components, but lowers the stability of their crystal lattices due to the formation of point defects, as well. In this case, the lattice state is determined both by the emergence of the oxygen (VО) and lead (VPb) vacancies, as well as of the associates of the [V О •• 2Pb / i ] type, and by the emergence of various elastic stresses, which promotes the relaxation of the chemical bonds between atoms, caused by the deficiency introduced into the anionic sublattice of the Pb0,85Ba0,25Zr0,53Ti0,47O3−8 solid solution at the oxygen desorption process. |
| first_indexed | 2024-04-10T03:12:04Z |
| format | Article |
| id | doaj.art-36423e0afff54c7cba6faf86bf6f467b |
| institution | Directory Open Access Journal |
| issn | 1729-7648 |
| language | Russian |
| last_indexed | 2025-03-14T05:48:08Z |
| publishDate | 2020-11-01 |
| publisher | Educational institution «Belarusian State University of Informatics and Radioelectronics» |
| record_format | Article |
| series | Doklady Belorusskogo gosudarstvennogo universiteta informatiki i radioèlektroniki |
| spelling | doaj.art-36423e0afff54c7cba6faf86bf6f467b2025-03-05T12:43:10ZrusEducational institution «Belarusian State University of Informatics and Radioelectronics»Doklady Belorusskogo gosudarstvennogo universiteta informatiki i radioèlektroniki1729-76482020-11-0118751310.35596/1729-7648-2020-18-7-5-131638Degradation mechanisms of the Pb1−хBaхZr0,53Ti0,47O3−δ ferroelectric structureL. I. Hurski0A. V. Petrov1D. A. Golosov2P. N. Kireev3N. A. Kalanda4M. V. Yarmolich5Belarusian State University of Informatics and RadioelectronicsSSPA “Scientific-Practical Materials Research Centre of NAS of Belarus”Belarusian State University of Informatics and RadioelectronicsSSI “Powder Metallurgy Institute of the NAS of Belarus”SSPA “Scientific-Practical Materials Research Centre of NAS of Belarus”SSPA “Scientific-Practical Materials Research Centre of NAS of Belarus”The present paper is devoted to the study of the structural degradation mechanisms of ferroelectric having Pb1−хBaхZr0,53Ti0,47O3−δ composition. On the base of investigations of the influence of temperature-time synthesis modes on the structural perfection degree of the Pb0,85Ba0,25Zr0,53Ti0,47O3−8 compound, it has been determined, that a shift of the position of the XRD reflex from the plane (112) and its broadening, which is caused by the amorphization and an increase of the elastic stresses in the material crystal lattice during the annealing of the compound. It has been demonstrated that at the increase of the annealing temperature up to 520 K, the crystal lattice of the ferroelectric is deformed by means of a formation of VPb,V0 and [V О •• 2Pb / i ] defects, which is realized in a decrease of the I(hkl) intensity relationship of the XRD reflexes from the planes (112) and (211). It has been supposed that an excess of lead is produced on the grain boundaries as a result of this annealing process, which promotes a local manifestation of the liquid phase. This phase which takes place in the transfer of the material components, not only increases the interaction of the reacting components, but lowers the stability of their crystal lattices due to the formation of point defects, as well. In this case, the lattice state is determined both by the emergence of the oxygen (VО) and lead (VPb) vacancies, as well as of the associates of the [V О •• 2Pb / i ] type, and by the emergence of various elastic stresses, which promotes the relaxation of the chemical bonds between atoms, caused by the deficiency introduced into the anionic sublattice of the Pb0,85Ba0,25Zr0,53Ti0,47O3−8 solid solution at the oxygen desorption process.https://doklady.bsuir.by/jour/article/view/2880solid solutionferroelectric and dielectriclead-barium zirconate-titanatepb085ba025zr053ti047o3− propertiesdefectsvacanciesgrain boundariesliquid phasex-ray phase analysis |
| spellingShingle | L. I. Hurski A. V. Petrov D. A. Golosov P. N. Kireev N. A. Kalanda M. V. Yarmolich Degradation mechanisms of the Pb1−хBaхZr0,53Ti0,47O3−δ ferroelectric structure Doklady Belorusskogo gosudarstvennogo universiteta informatiki i radioèlektroniki solid solution ferroelectric and dielectriclead-barium zirconate-titanate pb0 85ba0 25zr0 53ti0 47o3− properties defects vacancies grain boundaries liquid phase x-ray phase analysis |
| title | Degradation mechanisms of the Pb1−хBaхZr0,53Ti0,47O3−δ ferroelectric structure |
| title_full | Degradation mechanisms of the Pb1−хBaхZr0,53Ti0,47O3−δ ferroelectric structure |
| title_fullStr | Degradation mechanisms of the Pb1−хBaхZr0,53Ti0,47O3−δ ferroelectric structure |
| title_full_unstemmed | Degradation mechanisms of the Pb1−хBaхZr0,53Ti0,47O3−δ ferroelectric structure |
| title_short | Degradation mechanisms of the Pb1−хBaхZr0,53Ti0,47O3−δ ferroelectric structure |
| title_sort | degradation mechanisms of the pb1 хbaхzr0 53ti0 47o3 δ ferroelectric structure |
| topic | solid solution ferroelectric and dielectriclead-barium zirconate-titanate pb0 85ba0 25zr0 53ti0 47o3− properties defects vacancies grain boundaries liquid phase x-ray phase analysis |
| url | https://doklady.bsuir.by/jour/article/view/2880 |
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