Atomic resolution microstructure study of Bi-doped SrTiO3
Intrinsic SrTiO3 is a quantum paraelectric, but moderately Bi-doped SrTiO3 exhibits dielectric frequency dispersion similar to relaxor ferroelectrics. In this paper, detailed electron microscopic studies of the microstructures of Bi-doped SrTiO3 samples were presented. It was found that the Sr sites...
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| Format: | Article |
| Language: | English |
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World Scientific Publishing
2024-12-01
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| Series: | Journal of Advanced Dielectrics |
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| Online Access: | https://www.worldscientific.com/doi/10.1142/S2010135X24500048 |
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| author | Chao Li Yijun Zhang Guohua Dong Guangliang Hu Guang Yang Chaoqiang Liu Houwen Chen Xiaoyong Wei |
| author_facet | Chao Li Yijun Zhang Guohua Dong Guangliang Hu Guang Yang Chaoqiang Liu Houwen Chen Xiaoyong Wei |
| author_sort | Chao Li |
| collection | DOAJ |
| description | Intrinsic SrTiO3 is a quantum paraelectric, but moderately Bi-doped SrTiO3 exhibits dielectric frequency dispersion similar to relaxor ferroelectrics. In this paper, detailed electron microscopic studies of the microstructures of Bi-doped SrTiO3 samples were presented. It was found that the Sr sites were replaced by off-central Bi, resulting in tensile strain in the strontium titanate (STO) lattice. In the Bi-doped SrTiO3 samples, the valence of titanium mainly showed the Ti[Formula: see text] characteristic. According to the dielectric behavior and microstructure analysis, the polar nanoregions (PNRs) composed of strained SrTiO3 nanoclusters should be responsible for the ferroelectric relaxor behavior in samples with moderate Bi content. |
| format | Article |
| id | doaj-art-8a55acf877f64c599ea11022d5d44a05 |
| institution | DOAJ |
| issn | 2010-135X 2010-1368 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | World Scientific Publishing |
| record_format | Article |
| series | Journal of Advanced Dielectrics |
| spelling | doaj-art-8a55acf877f64c599ea11022d5d44a052025-08-20T02:50:04ZengWorld Scientific PublishingJournal of Advanced Dielectrics2010-135X2010-13682024-12-01140610.1142/S2010135X24500048Atomic resolution microstructure study of Bi-doped SrTiO3Chao Li0Yijun Zhang1Guohua Dong2Guangliang Hu3Guang Yang4Chaoqiang Liu5Houwen Chen6Xiaoyong Wei7Instrumental Analysis Center, Xi’an Jiaotong University, Xi’an 710049, P. R. ChinaElectronic Materials Research Laboratory, Key Laboratory of The Ministry of Education & International, Center for Dielectric Research, Xi’an Jiaotong University, Xi’an 710049, P. R. ChinaElectronic Materials Research Laboratory, Key Laboratory of The Ministry of Education & International, Center for Dielectric Research, Xi’an Jiaotong University, Xi’an 710049, P. R. ChinaElectronic Materials Research Laboratory, Key Laboratory of The Ministry of Education & International, Center for Dielectric Research, Xi’an Jiaotong University, Xi’an 710049, P. R. ChinaElectronic Materials Research Laboratory, Key Laboratory of The Ministry of Education & International, Center for Dielectric Research, Xi’an Jiaotong University, Xi’an 710049, P. R. ChinaCollege of Materials Science and Engineering & Electron Microscopy Center of Chongqing University, Chongqing 400044, P. R. ChinaCollege of Materials Science and Engineering & Electron Microscopy Center of Chongqing University, Chongqing 400044, P. R. ChinaElectronic Materials Research Laboratory, Key Laboratory of The Ministry of Education & International, Center for Dielectric Research, Xi’an Jiaotong University, Xi’an 710049, P. R. ChinaIntrinsic SrTiO3 is a quantum paraelectric, but moderately Bi-doped SrTiO3 exhibits dielectric frequency dispersion similar to relaxor ferroelectrics. In this paper, detailed electron microscopic studies of the microstructures of Bi-doped SrTiO3 samples were presented. It was found that the Sr sites were replaced by off-central Bi, resulting in tensile strain in the strontium titanate (STO) lattice. In the Bi-doped SrTiO3 samples, the valence of titanium mainly showed the Ti[Formula: see text] characteristic. According to the dielectric behavior and microstructure analysis, the polar nanoregions (PNRs) composed of strained SrTiO3 nanoclusters should be responsible for the ferroelectric relaxor behavior in samples with moderate Bi content.https://www.worldscientific.com/doi/10.1142/S2010135X24500048Bi-doped SrTiO3dielectric relaxoratomic resolution microstructurepolar nanoregions |
| spellingShingle | Chao Li Yijun Zhang Guohua Dong Guangliang Hu Guang Yang Chaoqiang Liu Houwen Chen Xiaoyong Wei Atomic resolution microstructure study of Bi-doped SrTiO3 Journal of Advanced Dielectrics Bi-doped SrTiO3 dielectric relaxor atomic resolution microstructure polar nanoregions |
| title | Atomic resolution microstructure study of Bi-doped SrTiO3 |
| title_full | Atomic resolution microstructure study of Bi-doped SrTiO3 |
| title_fullStr | Atomic resolution microstructure study of Bi-doped SrTiO3 |
| title_full_unstemmed | Atomic resolution microstructure study of Bi-doped SrTiO3 |
| title_short | Atomic resolution microstructure study of Bi-doped SrTiO3 |
| title_sort | atomic resolution microstructure study of bi doped srtio3 |
| topic | Bi-doped SrTiO3 dielectric relaxor atomic resolution microstructure polar nanoregions |
| url | https://www.worldscientific.com/doi/10.1142/S2010135X24500048 |
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