Electrical property and phase transition analysis of KNN-based lead-free ferroelectric films

doi:10.1088/2053-1591/ac6b8c

	Electrical property and phase transition analysis of KNN-based lead-free ferroelectric films
	Li, Teng 1,6; Dai, Song 1,6; Xu, Liqiang 1,6; Liu, Yiwen 1,6; Zhuo, Hao 2,3; Wang, Ke 5; Wang, Haifeng 4; Chen, Feng 2
刊名	MATERIALS RESEARCH EXPRESS
	2022-05-01
卷号	9
关键词	lead-free epitaxial film leakage behavior frequency-dependent ferroelectricity thermal stability phase transition
DOI	10.1088/2053-1591/ac6b8c
通讯作者	Wang, Haifeng(hfwang@mail.ustc.edu.cn) ; Chen, Feng(fchen@hmfl.ac.cn)
英文摘要	The electrical properties, phase construction, thermal stability and phase transition behavior are investigated in 0.95(K0.49Na0.49Li0.02)(Ta0.2Nb0.8)O-3-0.05BaZrO(3) with 2 wt% MnO2 (KNNLT-BZM) lead-free epitaxial ferroelectric film on LaNiO3 (LNO)-coated SrTiO3 (STO) (001) substrate. The x-ray diffraction results show that a mixed orthorhombic (O) and tetragonal (T) phase is obtained in KNNLT-BZM film. The MnO2 doping can effectively suppress its leakage current, which greatly improves the electrical performance featured by a lower leakage value of 8 x 10(-11) A cm(-2), a twice remnant polarization of 44.7 mu C cm(-2), and frequency-dependent ferroelectricity between 50 Hz and 10 kHz. Strikingly, the KNNLT-BZM film maintained ferroelectric nature up to 200 degrees C, and exhibit a phase transition from O + T mixed phase to T phase (T (Mix-T)) at 300 degrees C with a high Curie temperature above 440 degrees C. These results suggest great application potentials of KNN-based films in lead-free micro-electronic devices.
资助项目	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] ; Anhui Provincial Higher-education Natural Science Research Project[K120462019]
WOS关键词	PIEZOELECTRIC PROPERTIES ; COEXISTENCE
WOS研究方向	Materials Science
语种	英语
出版者	IOP Publishing Ltd
WOS记录号	WOS:000792892300001
资助机构	Collaborative Innovation Cultivation Foundation of Hefei Science Center, Chinese Academy of Sciences ; State Key Laboratory of New Ceramic and Fine Processing, Tsinghua University ; Anhui Provincial Higher-education Natural Science Research Project
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/130811]
专题	中国科学院合肥物质科学研究院
通讯作者	Wang, Haifeng; Chen, Feng
作者单位	1.Anhui Univ, Inst Phys Sci, Informat Mat & Intelligent Sensing Lab Anhui Prov, Hefei 230601, Anhui, Peoples R China 2.Chinese Acad Sci, Anhui Prov Key Lab Condensed Matter Phys Extreme, High Magnet Field Lab, Hefei 230031, Peoples R China 3.Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Peoples R China 4.China Acad Engn Phys, Inst Fluid Phys, Mianyang 621900, Sichuan, Peoples R China 5.Tsinghua Univ, Sch Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China 6.Anhui Univ, Inst Informat Technol, Informat Mat & Intelligent Sensing Lab Anhui Prov, Hefei 230601, Anhui, Peoples R China
推荐引用方式 GB/T 7714	Li, Teng,Dai, Song,Xu, Liqiang,et al. Electrical property and phase transition analysis of KNN-based lead-free ferroelectric films[J]. MATERIALS RESEARCH EXPRESS,2022,9.
APA	Li, Teng.,Dai, Song.,Xu, Liqiang.,Liu, Yiwen.,Zhuo, Hao.,...&Chen, Feng.(2022).Electrical property and phase transition analysis of KNN-based lead-free ferroelectric films.MATERIALS RESEARCH EXPRESS,9.
MLA	Li, Teng,et al."Electrical property and phase transition analysis of KNN-based lead-free ferroelectric films".MATERIALS RESEARCH EXPRESS 9(2022).