Dielectric and ferroelectric properties of (Bi0.5Na0.5)0.94Ba0.06Ti1−xAlxO3−δ lead-free ferroelectric ceramics
| العنوان: | Dielectric and ferroelectric properties of (Bi0.5Na0.5)0.94Ba0.06Ti1−xAlxO3−δ lead-free ferroelectric ceramics |
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| المؤلفون: | Yan-zi Qiu, Rui-xue Cheng, Han-li Lian, Xiao-ming Chen, Jin-yan Shi |
| المصدر: | Journal of Materials Science: Materials in Electronics. 31:7927-7936 |
| بيانات النشر: | Springer Science and Business Media LLC, 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | 010302 applied physics, Permittivity, Materials science, Ferroelectric ceramics, Doping, Analytical chemistry, Dielectric, Condensed Matter Physics, Microstructure, 01 natural sciences, Ferroelectricity, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, Phase (matter), visual_art, 0103 physical sciences, visual_art.visual_art_medium, Ceramic, Electrical and Electronic Engineering |
| الوصف: | Microstructure and dielectric properties of the lead-free ferroelectric ceramics (Bi0.5Na0.5)0.94Ba0.06Ti1−xAlxO3−δ (abbreviated as BNBTA/x, x = 0, 0.04, 0.06, 0.08) obtained via a solid-state reaction method were studied. The ceramics with x≤0.06 exhibit pure structure without detectable secondary phase by X-ray diffraction measurement. There appears a second phase in the ceramic BNBTA/0.08. With an increase in the Al3+ amount, dielectric constant of the ceramics decreases, and the change in dielectric constant with increasing temperature between the two dielectric characteristic temperatures (TRE and Tm) is gradual. The poled ceramic BNBTA/0 shows a steep increase in permittivity at the temperature denoted as Td around 100 °C. But, the poled ceramics with x > 0 do not exhibit the Td anomaly on the permittivity spectra. The diffuse dielectric behavior around Tm was studied via the Curie–Weiss law and modified Curie–Weiss law. Compared to the ceramic BNBTA/0, the Al3+ -doped ceramics show slim ferroelectric hysteresis loops. The temperature-dependent ferroelectric properties and energy-storage behavior were studied. |
| تدمد: | 1573-482X 0957-4522 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::72bc35fbf2bac20909038dcea06e93ad https://doi.org/10.1007/s10854-020-03331-9 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi...........72bc35fbf2bac20909038dcea06e93ad |
| قاعدة البيانات: | OpenAIRE |
Find this article in full text from Springer Verlag. | تدمد: | 1573482X 09574522 |
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