Ferroelectric, magnetic, and optical properties of Aurivillius compound Bi5FeTi2.5Co0.5O15
Bi5FeTi2.5Co0.5O15 (BFTC) ceramics was successfully synthesized using the sol-gel method. It exhibits simultaneously visible-light response, ferroelectric and weak ferromagnetic orders at room temperature. The narrow band gap of 2.06 eV was determined via the UV–vis diffuse absorption spectrum. The...
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| Format: | Article |
| Language: | English |
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Elsevier
2018-12-01
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| Series: | Journal of Materiomics |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S235284781830042X |
| _version_ | 1797728268484345856 |
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| author | Hui Sun Yuying Wu Xi Xie Yuxi Lu Tianshu Yao Jiansheng Zhong Xiaobing Chen |
| author_facet | Hui Sun Yuying Wu Xi Xie Yuxi Lu Tianshu Yao Jiansheng Zhong Xiaobing Chen |
| author_sort | Hui Sun |
| collection | DOAJ |
| description | Bi5FeTi2.5Co0.5O15 (BFTC) ceramics was successfully synthesized using the sol-gel method. It exhibits simultaneously visible-light response, ferroelectric and weak ferromagnetic orders at room temperature. The narrow band gap of 2.06 eV was determined via the UV–vis diffuse absorption spectrum. The x-ray photoelectron spectroscopy results show that the Fe ions in the samples is 3 + and 2 + valence states while the doped Co ions is 2 + valence state. The BFTC sample undergoes a ferromagnetic-like transition at ∼552 K. Weak ferromagnetism is mainly due to spin-canting of Fe-based and Co-based sublattices via Dzyaloshinskii-Moriya (DM) interaction. Dielectric loss and dielectric modulus exhibit the characteristics of dielectric relaxation, which can be ascribed to oxygen˗vacancy hopping. These results reveal many potentially useful physical phenomena and open a new avenue to design of novel solar-energy conversion devices and multiferroic applications. Keywords: Aurivillius phase, Weak ferromagnetism, Optical properties, Co-doping |
| first_indexed | 2024-03-12T11:11:33Z |
| format | Article |
| id | doaj.art-57ee1be0dd554953affb1903a1370d7e |
| institution | Directory Open Access Journal |
| issn | 2352-8478 |
| language | English |
| last_indexed | 2024-03-12T11:11:33Z |
| publishDate | 2018-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materiomics |
| spelling | doaj.art-57ee1be0dd554953affb1903a1370d7e2023-09-02T02:44:57ZengElsevierJournal of Materiomics2352-84782018-12-0144353359Ferroelectric, magnetic, and optical properties of Aurivillius compound Bi5FeTi2.5Co0.5O15Hui Sun0Yuying Wu1Xi Xie2Yuxi Lu3Tianshu Yao4Jiansheng Zhong5Xiaobing Chen6College of Physics Science and Technology, Yangzhou University, Yangzhou, 225002, China; Corresponding author.College of Physics Science and Technology, Yangzhou University, Yangzhou, 225002, ChinaCollege of Physics Science and Technology, Yangzhou University, Yangzhou, 225002, ChinaCollege of Physics Science and Technology, Yangzhou University, Yangzhou, 225002, ChinaCollege of Physics Science and Technology, Yangzhou University, Yangzhou, 225002, ChinaCollege of Physics Science and Technology, Yangzhou University, Yangzhou, 225002, ChinaGuangling College of Yangzhou University, Yangzhou, 225002, China; Corresponding author.Bi5FeTi2.5Co0.5O15 (BFTC) ceramics was successfully synthesized using the sol-gel method. It exhibits simultaneously visible-light response, ferroelectric and weak ferromagnetic orders at room temperature. The narrow band gap of 2.06 eV was determined via the UV–vis diffuse absorption spectrum. The x-ray photoelectron spectroscopy results show that the Fe ions in the samples is 3 + and 2 + valence states while the doped Co ions is 2 + valence state. The BFTC sample undergoes a ferromagnetic-like transition at ∼552 K. Weak ferromagnetism is mainly due to spin-canting of Fe-based and Co-based sublattices via Dzyaloshinskii-Moriya (DM) interaction. Dielectric loss and dielectric modulus exhibit the characteristics of dielectric relaxation, which can be ascribed to oxygen˗vacancy hopping. These results reveal many potentially useful physical phenomena and open a new avenue to design of novel solar-energy conversion devices and multiferroic applications. Keywords: Aurivillius phase, Weak ferromagnetism, Optical properties, Co-dopinghttp://www.sciencedirect.com/science/article/pii/S235284781830042X |
| spellingShingle | Hui Sun Yuying Wu Xi Xie Yuxi Lu Tianshu Yao Jiansheng Zhong Xiaobing Chen Ferroelectric, magnetic, and optical properties of Aurivillius compound Bi5FeTi2.5Co0.5O15 Journal of Materiomics |
| title | Ferroelectric, magnetic, and optical properties of Aurivillius compound Bi5FeTi2.5Co0.5O15 |
| title_full | Ferroelectric, magnetic, and optical properties of Aurivillius compound Bi5FeTi2.5Co0.5O15 |
| title_fullStr | Ferroelectric, magnetic, and optical properties of Aurivillius compound Bi5FeTi2.5Co0.5O15 |
| title_full_unstemmed | Ferroelectric, magnetic, and optical properties of Aurivillius compound Bi5FeTi2.5Co0.5O15 |
| title_short | Ferroelectric, magnetic, and optical properties of Aurivillius compound Bi5FeTi2.5Co0.5O15 |
| title_sort | ferroelectric magnetic and optical properties of aurivillius compound bi5feti2 5co0 5o15 |
| url | http://www.sciencedirect.com/science/article/pii/S235284781830042X |
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