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

doi:10.1021/acs.inorgchem.2c03198

HFCAS OpenIR

	Anomalous Lattice Evolution-Mediated Electrical Properties in Transparent KNN-Based Lead-Free Ferroelectric Films
	Dai, Song 1; Xu, Liqiang 1; Han, Kun 1; Chen, Pingfan 1; Wang, Ke2 ; Huang, Zhen 5; Wu, Wenbin1,3,4 ; Chen, Feng3
	2022-11-16
发表期刊	INORGANIC CHEMISTRY
ISSN	0020-1669
通讯作者	Xu, Liqiang(xuliqiang@ahu.edu.cn) ; Huang, Zhen() ; Chen, Feng(fchen@hmfl.ac.cn)
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.
DOI	10.1021/acs.inorgchem.2c03198
关键词[WOS]	THIN-FILMS ; GIANT PIEZOELECTRICITY ; TEMPERATURE ; CERAMICS
收录类别	SCI
语种	英语
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]
项目资助者	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
WOS研究方向	Chemistry
WOS类目	Chemistry, Inorganic & Nuclear
WOS记录号	WOS:000886693700001
出版者	AMER CHEMICAL SOC
引用统计
文献类型	期刊论文
条目标识符	http://ir.hfcas.ac.cn:8080/handle/334002/131719
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.Anhui Univ, Inst Phys Sci & Informat Technol, Informat Mat & Intelligent Sensing Lab Anhui Prov, Hefei 230601, Peoples R China 2.Tsinghua Univ, Sch Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China 3.Chinese Acad Sci, Anhui Prov Key Lab Condensed Matter Phys Extreme C, High Magnet Field Lab, Hefei 230031, Anhui, Peoples R China 4.Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, 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).