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Characterization of large ferroelectric polarization and high-TC in sol-gel deposited PbTiO3-based perovskite thin films |
| Mengqi Ye(叶梦琪)1,2, Zhao Pan(潘昭)2,†, Weibin Song(宋伟宾)2, Jin Liu(刘锦)2, Xubin Ye(叶旭斌)2, Xin Xiong(熊心)3, Hui Liu(刘辉)3, Longlong Fan(樊龙龙)4, Nianpeng Lu(鲁年鹏)2, Ruilong Wang(王瑞龙)1,‡, and Youwen Long(龙有文)2,5,§ |
1 Key Laboratory for Intelligent Sensing System and Security of Ministry of Education, School of Physics & School of Microelectrics, Hubei University, Wuhan 430062, China;
2 Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
3 School of Physics, University of Science and Technology Beijing, Beijing 100083, China;
4 Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China;
5 Songshan Lake Materials Laboratory, Dongguan 523808, China |
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Abstract BiMeO3-PbTiO3 (where Me represents transition metals) perovskite-type thin films have been widely studied due to their superior ferroelectric properties, including robust ferroelectric polarization and high Curie temperatures. In this study, PbTiO$_{3}$-based perovskite thin films of $x$Bi(Cu$_{1/2}$Zr$_{1/2}$)O$_{3}$-($1-x$)PbTiO$_{3 }$ ($x$BCZ-($1-x$)PT) were designed and prepared on Pt(111)/Ti/SiO$_{2}$/Si substrates using the conventional sol-gel method. The $x$BCZ-($1-x$)PT thin films demonstrate remarkable crystallinity, characterized by a perovskite structure and a dense microstructure, which contribute to their high-performance ferroelectric and fatigue properties. Notably, the thin films exhibit large remnant polarization (2$P_{\rm r}$) values, reaching 98 μC$\cdot$cm$^{-2}$ and 74 μC$\cdot$cm$^{-2}$ for the 0.05BCZ-0.95PT and 0.1BCZ-0.9PT compositions, respectively. Furthermore, the thin films also demonstrate a high Curie temperature ($T_{\rm C} = 510 ^\circ$C), as well as favorable fatigue properties and low leakage current, suggesting their potential applicability in ferroelectric devices.
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Received: 21 May 2025
Revised: 26 June 2025
Accepted manuscript online: 17 July 2025
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PACS:
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77.84.-s
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(Dielectric, piezoelectric, ferroelectric, and antiferroelectric materials)
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73.90.+f
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(Other topics in electronic structure and electrical properties of surfaces, interfaces, thin films, and low-dimensional structures)
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77.84.Cg
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(PZT ceramics and other titanates)
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81.20.Fw
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(Sol-gel processing, precipitation)
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| Fund: Project supported by the National Key Research and Development Program of China (Grant No. 2021YFA1400300), the National Natural Science Foundation of China (Grant Nos. 22271309, 12304268, 12261131499, and 11921004), and the China Postdoctoral Science Foundation (Grant No. 2023M743741). |
Corresponding Authors:
Zhao Pan, Ruilong Wang, Youwen Long
E-mail: zhaopan@iphy.ac.cn;wangrl@hubu.edu.cn;ywlong@iphy.ac.cn
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Cite this article:
Mengqi Ye(叶梦琪), Zhao Pan(潘昭), Weibin Song(宋伟宾), Jin Liu(刘锦), Xubin Ye(叶旭斌), Xin Xiong(熊心), Hui Liu(刘辉), Longlong Fan(樊龙龙), Nianpeng Lu(鲁年鹏), Ruilong Wang(王瑞龙), and Youwen Long(龙有文) Characterization of large ferroelectric polarization and high-TC in sol-gel deposited PbTiO3-based perovskite thin films 2026 Chin. Phys. B 35 027702
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