Colossal permittivity with ultra-wide temperature stability in Bi + Ca co-doped BaTiO3
The poor temperature stability of the BaTiO3 ceramic has always been the main problem limiting their application. This situation has been improved but sacrifices the intrinsic polarization, which significantly reduces the dielectric constant. In this work, the mechanism of multiple polarization was...
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Elsevier
2025-03-01
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| Series: | Journal of Materiomics |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2352847824001023 |
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| author | Tingting Fan Qi Shi Wenrong Xiao Guangzu Zhang Feng Huang Wenlin Wang Wen Dong Shenglin Jiang Jing Wang |
| author_facet | Tingting Fan Qi Shi Wenrong Xiao Guangzu Zhang Feng Huang Wenlin Wang Wen Dong Shenglin Jiang Jing Wang |
| author_sort | Tingting Fan |
| collection | DOAJ |
| description | The poor temperature stability of the BaTiO3 ceramic has always been the main problem limiting their application. This situation has been improved but sacrifices the intrinsic polarization, which significantly reduces the dielectric constant. In this work, the mechanism of multiple polarization was creatively introduced, and the temperature stability and dielectric properties of BaTiO3-based ceramics are simultaneously enhanced. In particular, the Ba0.9925Bi0.005Ti0.995Ca0.005O2.995 (BBTC0.5) ceramic sample achieved excellent temperature stability (−14.8% to 8.85%) over an ultra-wide temperature range (−47 to 400 °C) and exhibited colossal permittivity (27,125, 25 °C, 1 kHz) and low dielectric loss (0.07, 25 °C, 1 kHz). The dielectric properties, complex impedance spectra combined with XPS results indicate that the defective dipole clusters (Ti3+-VO..-Ti3+, BiBa. and CaTi″-VO..) along with surface effects lead to colossal permittivity effect. More importantly, SEM images show the presence of the second phase at grain boundaries, which prevent the carriers within the grains from accumulating at the grain boundaries. As a result, the dielectric loss was reduced and the temperature stability was further extended. This strategy breaks the traditional limitation of single/noncomprehensive enhancement by single-polarization mechanism, and is of great theoretical and practical significance to promote the research and application of high-performance BaTiO3-based ceramic materials. |
| format | Article |
| id | doaj-art-0a11074dc6024eba98272d2fe343fffc |
| institution | Kabale University |
| issn | 2352-8478 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materiomics |
| spelling | doaj-art-0a11074dc6024eba98272d2fe343fffc2025-01-14T04:12:28ZengElsevierJournal of Materiomics2352-84782025-03-01112100877Colossal permittivity with ultra-wide temperature stability in Bi + Ca co-doped BaTiO3Tingting Fan0Qi Shi1Wenrong Xiao2Guangzu Zhang3Feng Huang4Wenlin Wang5Wen Dong6Shenglin Jiang7Jing Wang8Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education, State Key Laboratory of New Pharmaceutical Preparations and Excipients, Key Laboratory of Analytical Science and Technology of Hebei Province, College of Chemistry and Materials Science, Hebei University, Baoding, 071002, ChinaKey Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education, State Key Laboratory of New Pharmaceutical Preparations and Excipients, Key Laboratory of Analytical Science and Technology of Hebei Province, College of Chemistry and Materials Science, Hebei University, Baoding, 071002, ChinaSchool of Integrated Circuits, Wuhan National Laboratory for Optoelectronics & Optical Valley Laboratory, Huazhong University of Science and Technology, Wuhan, 430074, ChinaSchool of Integrated Circuits, Wuhan National Laboratory for Optoelectronics & Optical Valley Laboratory, Huazhong University of Science and Technology, Wuhan, 430074, ChinaKey Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education, State Key Laboratory of New Pharmaceutical Preparations and Excipients, Key Laboratory of Analytical Science and Technology of Hebei Province, College of Chemistry and Materials Science, Hebei University, Baoding, 071002, ChinaKey Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education, State Key Laboratory of New Pharmaceutical Preparations and Excipients, Key Laboratory of Analytical Science and Technology of Hebei Province, College of Chemistry and Materials Science, Hebei University, Baoding, 071002, ChinaSchool of Integrated Circuits, Wuhan National Laboratory for Optoelectronics & Optical Valley Laboratory, Huazhong University of Science and Technology, Wuhan, 430074, ChinaSchool of Integrated Circuits, Wuhan National Laboratory for Optoelectronics & Optical Valley Laboratory, Huazhong University of Science and Technology, Wuhan, 430074, ChinaKey Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education, State Key Laboratory of New Pharmaceutical Preparations and Excipients, Key Laboratory of Analytical Science and Technology of Hebei Province, College of Chemistry and Materials Science, Hebei University, Baoding, 071002, China; Corresponding author.The poor temperature stability of the BaTiO3 ceramic has always been the main problem limiting their application. This situation has been improved but sacrifices the intrinsic polarization, which significantly reduces the dielectric constant. In this work, the mechanism of multiple polarization was creatively introduced, and the temperature stability and dielectric properties of BaTiO3-based ceramics are simultaneously enhanced. In particular, the Ba0.9925Bi0.005Ti0.995Ca0.005O2.995 (BBTC0.5) ceramic sample achieved excellent temperature stability (−14.8% to 8.85%) over an ultra-wide temperature range (−47 to 400 °C) and exhibited colossal permittivity (27,125, 25 °C, 1 kHz) and low dielectric loss (0.07, 25 °C, 1 kHz). The dielectric properties, complex impedance spectra combined with XPS results indicate that the defective dipole clusters (Ti3+-VO..-Ti3+, BiBa. and CaTi″-VO..) along with surface effects lead to colossal permittivity effect. More importantly, SEM images show the presence of the second phase at grain boundaries, which prevent the carriers within the grains from accumulating at the grain boundaries. As a result, the dielectric loss was reduced and the temperature stability was further extended. This strategy breaks the traditional limitation of single/noncomprehensive enhancement by single-polarization mechanism, and is of great theoretical and practical significance to promote the research and application of high-performance BaTiO3-based ceramic materials.http://www.sciencedirect.com/science/article/pii/S2352847824001023Temperature stabilityColossal permittivityBaTiO3BiCa co-dopedDefect dipole clusters |
| spellingShingle | Tingting Fan Qi Shi Wenrong Xiao Guangzu Zhang Feng Huang Wenlin Wang Wen Dong Shenglin Jiang Jing Wang Colossal permittivity with ultra-wide temperature stability in Bi + Ca co-doped BaTiO3 Journal of Materiomics Temperature stability Colossal permittivity BaTiO3 Bi Ca co-doped Defect dipole clusters |
| title | Colossal permittivity with ultra-wide temperature stability in Bi + Ca co-doped BaTiO3 |
| title_full | Colossal permittivity with ultra-wide temperature stability in Bi + Ca co-doped BaTiO3 |
| title_fullStr | Colossal permittivity with ultra-wide temperature stability in Bi + Ca co-doped BaTiO3 |
| title_full_unstemmed | Colossal permittivity with ultra-wide temperature stability in Bi + Ca co-doped BaTiO3 |
| title_short | Colossal permittivity with ultra-wide temperature stability in Bi + Ca co-doped BaTiO3 |
| title_sort | colossal permittivity with ultra wide temperature stability in bi ca co doped batio3 |
| topic | Temperature stability Colossal permittivity BaTiO3 Bi Ca co-doped Defect dipole clusters |
| url | http://www.sciencedirect.com/science/article/pii/S2352847824001023 |
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