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Anomalous Lattice Evolution-Mediated Electrical Properties in Transparent KNN-Based Lead-Free Ferroelectric Films

文献类型：期刊论文

作者Dai, Song2; Xu, Liqiang2; Han, Kun2; Chen, Pingfan2; Wang, Ke3; Huang, Zhen5; Wu, Wenbin1,2,4; Chen, Feng4
刊名INORGANIC CHEMISTRY
出版日期2022-11-16
ISSN号0020-1669
DOI10.1021/acs.inorgchem.2c03198
通讯作者Xu, Liqiang(xuliqiang@ahu.edu.cn) ; Huang, Zhen() ; Chen, Feng(fchen@hmfl.ac.cn)
英文摘要The epitaxial (K0.oa0.oi0.02)(Ta0.2Nb0.8)O3 with 2 wt % MnO2 addition (KNNLT-M) film on the transparent La0.03Ba0.97SnO3-coated LaAlO3 (001) substrate is chosen to investigate how the lattice evolution, as well as the electrical properties, optical bandgap energy, and thermal stability, changes with the growth oxygen pressure [P(O2)]. Compared to the other perovskite oxide films, for example, (La,Ca)MnO3, PbTiO3, and BaTiO3, an anomalous lattice evolution with an increased (decreased) out-of-plane (in-plane) lattice constant was observed in KNNLT-M films as P(O2) increases. Such anomalous lattice evolution can improve the electric properties of KNNLT-M films; for example, the ferroelectricity is significantly optimized and the dielectric constant is enhanced from 451 to 1248 at 1 kHz. The X-ray photoelectron spectra results have demonstrated that high P(O2) can make more K cations to enter the perovskite lattice and the Mn2+/Mn3+ existing in KNNLT can effectively suppress the leakage behavior, thus promoting the electrical nature of KNNLT-M films. The optical measurements show that the KNNLT-M film heterostructures are highly transparent with a maximum transmittance of -,80%, and both direct and indirect bandgap energies increase with increasing P(O2). Meanwhile, all these KNNLT-M films exhibit good thermal stability with stable ferroelectricity up to the high temperature of at least 125 degrees C. These results demonstrate that the control of the lattice structure and electrical properties by P(O2) is one of the important prerequisites for the application of KNN-based films.
WOS关键词THIN-FILMS ; GIANT PIEZOELECTRICITY ; TEMPERATURE ; CERAMICS
资助项目National Natural Science Foundation of China[12204005] ; National Natural Science Foundation of China[12074001] ; National Natural Science Foundation of China[12104008] ; National Natural Science Foundation of China[12104002] ; National Natural Science Foundation of China[11974326] ; National Natural Science Foundation of China[52032005] ; National Natural Science Foundation of China[U2032218] ; Anhui Provincial Higher-Education Natural Science Research Project[K120462019] ; Collaborative Innovation Cultivation Foundation of Hefei Science Center, Chinese Academy of Sciences[2021HSC-CIP017] ; State Key Laboratory of New Ceramic and Fine Processing, Tsinghua University[KFZD202001]
WOS研究方向Chemistry
语种英语
出版者AMER CHEMICAL SOC
WOS记录号WOS:000886693700001
资助机构National Natural Science Foundation of China ; Anhui Provincial Higher-Education Natural Science Research Project ; Collaborative Innovation Cultivation Foundation of Hefei Science Center, Chinese Academy of Sciences ; State Key Laboratory of New Ceramic and Fine Processing, Tsinghua University
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/131718]  
专题中国科学院合肥物质科学研究院
通讯作者Xu, Liqiang; Huang, Zhen; Chen, Feng
作者单位1.Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Peoples R China
2.Anhui Univ, Inst Phys Sci & Informat Technol, Informat Mat & Intelligent Sensing Lab Anhui Prov, Hefei 230601, Peoples R China
3.Tsinghua Univ, Sch Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China
4.Chinese Acad Sci, Anhui Prov Key Lab Condensed Matter Phys Extreme C, High Magnet Field Lab, Hefei 230031, Anhui, Peoples R China
5.Anhui Univ, Stony Brook Inst, Hefei 230039, Peoples R China
推荐引用方式
GB/T 7714		 Dai, Song,Xu, Liqiang,Han, Kun,et al. Anomalous Lattice Evolution-Mediated Electrical Properties in Transparent KNN-Based Lead-Free Ferroelectric Films[J]. INORGANIC CHEMISTRY,2022.
APA Dai, Song.,Xu, Liqiang.,Han, Kun.,Chen, Pingfan.,Wang, Ke.,...&Chen, Feng.(2022).Anomalous Lattice Evolution-Mediated Electrical Properties in Transparent KNN-Based Lead-Free Ferroelectric Films.INORGANIC CHEMISTRY.
MLA Dai, Song,et al."Anomalous Lattice Evolution-Mediated Electrical Properties in Transparent KNN-Based Lead-Free Ferroelectric Films".INORGANIC CHEMISTRY (2022).

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来源：合肥物质科学研究院

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