Ferroelectric and dielectric characterization studies on relaxor- and ferroelectric-like strontium-barium niobates
Ferroelectric domain structure evolution induced by an external electric field was investigated by means of nematic liquid crystal (NLC) method in two strontium-barium niobate single crystals of nominal composition: Sr₀.₇₀Ba₀.3₀Nb₂O₆ (SBN:70 - relaxor) and Sr₀.₆a₀.₇₄Nb₂O₆ (SBN:26 - ferroelectric). O...
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| Дата: | 2013 |
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| Автори: | , , , |
| Формат: | Стаття |
| Мова: | English |
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Інститут фізики конденсованих систем НАН України
2013
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| Назва видання: | Condensed Matter Physics |
| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/120830 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Ferroelectric and dielectric characterization studies on relaxor- and ferroelectric-like strontium-barium niobates / K. Matyjasek, J. Dec, S. Miga, T. Łukasiewicz // Condensed Matter Physics. — 2013. — Т. 16, № 3. — С. 31701:1-10. — Бібліогр.: 29 назв. — англ. |
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irk-123456789-1208302017-06-14T03:04:24Z Ferroelectric and dielectric characterization studies on relaxor- and ferroelectric-like strontium-barium niobates Matyjasek, K. Dec, J. Miga, S. Łukasiewicz, T. Ferroelectric domain structure evolution induced by an external electric field was investigated by means of nematic liquid crystal (NLC) method in two strontium-barium niobate single crystals of nominal composition: Sr₀.₇₀Ba₀.3₀Nb₂O₆ (SBN:70 - relaxor) and Sr₀.₆a₀.₇₄Nb₂O₆ (SBN:26 - ferroelectric). Our results provide evidence that the broad phase transition and frequency dispersion that are exhibited in SBN:70 crystal have a strong link to the configuration of ferroelectric microdomains. The large leakage current revealed in SBN:26 may compensate internal charges acting as pinning centers for domain walls, which gives rise to a less restricted domain growth similar to that observed in classical ferroelectrics. Microscale studies of a switching process in conjunction with electrical measurements allowed us to establish a relationship between local properties of the domain dynamics and macroscopic response i.e., polarization hysteresis loop and dielectric properties. Еволюцiя сегнетоелектричної доменної структури, iндукованої зовнiшнiм електричним полем дослiджу-валась за допомогою методу нематичного рiдкого кристалу в двох монокристалах стронцiй-барiєвого нiобату номiнального складу: Sr₀.₇₀Ba₀.3₀Nb₂O₆ (SBN:70 — релаксорний) i Sr₀.₆a₀.₇₄Nb₂O₆ (SBN:26 — сегнетоелектричний). Нашi результати показують, що широкий фазовий перехiд i частотна дисперсiя, продемонстрованi кристалом SBN:70, мають тiсний зв’язок iз конфiгурацiєю сегнетоелектричних мiкро-доменiв. Великий струм стiкання, виявлений в SBN:26, може компенсувати внутрiшнi заряди, що дiють як центри пiнiнгу для доменних стiнок, що приводить до менш обмеженого росту доменiв подiбно до того, що спостерiгається в класичних сегнетоелектриках. Мiкромасштiбнi дослiдження процесу перемикання в поєднаннi з електричними вимiрюваннями дозволяють встановити спiввiдношення мiж локальними властивостями динамiки доменiв i макроскопiчним вiдгуком, а саме, гiстерезисною петлею поляризацiї i дiелектричними властивостями. 2013 Article Ferroelectric and dielectric characterization studies on relaxor- and ferroelectric-like strontium-barium niobates / K. Matyjasek, J. Dec, S. Miga, T. Łukasiewicz // Condensed Matter Physics. — 2013. — Т. 16, № 3. — С. 31701:1-10. — Бібліогр.: 29 назв. — англ. 1607-324X PACS: 77.80.Dj, 77.80.Fm, 77.80.Jk, 77.84.Dy, 77.22.Ej DOI:10.5488/CMP.16.31701 arXiv:1309.5726 http://dspace.nbuv.gov.ua/handle/123456789/120830 en Condensed Matter Physics Інститут фізики конденсованих систем НАН України |
| institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| language |
English |
| description |
Ferroelectric domain structure evolution induced by an external electric field was investigated by means of nematic liquid crystal (NLC) method in two strontium-barium niobate single crystals of nominal composition: Sr₀.₇₀Ba₀.3₀Nb₂O₆ (SBN:70 - relaxor) and Sr₀.₆a₀.₇₄Nb₂O₆ (SBN:26 - ferroelectric). Our results provide evidence that the broad phase transition and frequency dispersion that are exhibited in SBN:70 crystal have a strong link to the configuration of ferroelectric microdomains. The large leakage current revealed in SBN:26 may compensate internal charges acting as pinning centers for domain walls, which gives rise to a less restricted domain growth similar to that observed in classical ferroelectrics. Microscale studies of a switching process in conjunction with electrical measurements allowed us to establish a relationship between local properties of the domain dynamics and macroscopic response i.e., polarization hysteresis loop and dielectric properties. |
| format |
Article |
| author |
Matyjasek, K. Dec, J. Miga, S. Łukasiewicz, T. |
| spellingShingle |
Matyjasek, K. Dec, J. Miga, S. Łukasiewicz, T. Ferroelectric and dielectric characterization studies on relaxor- and ferroelectric-like strontium-barium niobates Condensed Matter Physics |
| author_facet |
Matyjasek, K. Dec, J. Miga, S. Łukasiewicz, T. |
| author_sort |
Matyjasek, K. |
| title |
Ferroelectric and dielectric characterization studies on relaxor- and ferroelectric-like strontium-barium niobates |
| title_short |
Ferroelectric and dielectric characterization studies on relaxor- and ferroelectric-like strontium-barium niobates |
| title_full |
Ferroelectric and dielectric characterization studies on relaxor- and ferroelectric-like strontium-barium niobates |
| title_fullStr |
Ferroelectric and dielectric characterization studies on relaxor- and ferroelectric-like strontium-barium niobates |
| title_full_unstemmed |
Ferroelectric and dielectric characterization studies on relaxor- and ferroelectric-like strontium-barium niobates |
| title_sort |
ferroelectric and dielectric characterization studies on relaxor- and ferroelectric-like strontium-barium niobates |
| publisher |
Інститут фізики конденсованих систем НАН України |
| publishDate |
2013 |
| url |
http://dspace.nbuv.gov.ua/handle/123456789/120830 |
| citation_txt |
Ferroelectric and dielectric characterization studies on relaxor- and ferroelectric-like strontium-barium niobates / K. Matyjasek, J. Dec, S. Miga, T. Łukasiewicz // Condensed Matter Physics. — 2013. — Т. 16, № 3. — С. 31701:1-10. — Бібліогр.: 29 назв. — англ. |
| series |
Condensed Matter Physics |
| work_keys_str_mv |
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2023-10-18T20:38:14Z |
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2023-10-18T20:38:14Z |
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1796150717278322688 |