气候变化领域集成服务门户(CCPortal): Metastable oxygen vacancy ordering state and improved memristive behavior in TiO2 crystals

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DOI	10.1016/j.scib.2020.02.013
	Metastable oxygen vacancy ordering state and improved memristive behavior in TiO2 crystals
	Li T.; Hong F.; Yang K.; Yue B.; Tamura N.; Wu H.; Cheng Z.; Wang C.
发表日期	2020
ISSN	20959273
起始页码	631
结束页码	639
卷号	65 期号:8
英文摘要	Oxygen vacancy is one of the pivotal factors for tuning/creating various oxide properties. Understanding the behavior of oxygen vacancies is of paramount importance. In this study, we identify a metastable oxygen vacancy ordering state other than the well-known Magnéli phases in TiO2 crystals from both experimental and theoretical studies. The oxygen vacancy ordering is found to be a zigzag chain along the [0 0 1] direction in the (1 1 0) plane occurring in a wide temperature range of 200–500 °C. This metastable ordering state leads to a first-order phase transition accompanied by significant enhancement of dielectric permittivity and a memristive effect featuring a low driving electric field. Our results can improve oxide properties by engineering oxygen vacancies. © 2020 Science China Press
关键词	Memristive effect Oxygen vacancy ordering Phase transition TiO2 single crystal
英文关键词	Electric fields; High-k dielectric; Metastable phases; Permittivity; Phase transitions; Single crystals; Titanium dioxide; Dielectric permittivities; First-order phase transitions; Memristive behavior; Memristive effect; Oxide properties; Oxygen vacancy orderings; Theoretical study; Wide temperature ranges; Oxygen vacancies
语种	英语
来源期刊	Science Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/207107
作者单位	Laboratory of Dielectric Functional Materials, School of Physics & Material Science, Anhui University, Hefei, 230601, China; Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China; Advanced Liight Source, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, United States; Laboratory for Computational Physical Sciences (Ministry of Education), State Key Laboratory of Surface Physics, Department of Physics, Fudan University, Shanghai, 200433, China; Collaborative Innovation Center of Advanced Microstructures, Nanjing, 210093, China; Institute for Superconducting and Electronic Materials, University of Wollongong, Squires Way, North Wollongong, NSW 2500, Australia; State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics, Tsinghua University, Beijing, 100084, China
推荐引用方式 GB/T 7714	Li T.,Hong F.,Yang K.,et al. Metastable oxygen vacancy ordering state and improved memristive behavior in TiO2 crystals[J],2020,65(8).
APA	Li T..,Hong F..,Yang K..,Yue B..,Tamura N..,...&Wang C..(2020).Metastable oxygen vacancy ordering state and improved memristive behavior in TiO2 crystals.Science Bulletin,65(8).
MLA	Li T.,et al."Metastable oxygen vacancy ordering state and improved memristive behavior in TiO2 crystals".Science Bulletin 65.8(2020).