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Persistent Negative Compressibility Coupled to Optical Modulation in Empty-Perovskite TiOF2

文献类型：期刊论文

作者Lu, Yang2; Yan, Hao1; Huang, Eugene2; Chen, Bin2
刊名JOURNAL OF PHYSICAL CHEMISTRY C
出版日期2021-04-29
卷号125期号:16页码:8869-8875
ISSN号1932-7447
DOI10.1021/acs.jpcc.1c01601
英文摘要The counterintuitive phenomenon of negative linear compressibility (NLC) has tremendous application potential in the design of ultrasensitive pressure sensors, artificial muscles, and actuators. However, materials with this uncommon mechanical behavior usually suffer from a narrow operating pressure range or frequently undergo sudden structural collapse. Here, we report the sustainable negative compressibility of stable A-site-free perovskite titanium oxyfluoride (TiOF2) along its c-axis over a very broad pressure range. The persistent NLC of this open-framework structure is ascribed to the anisotropic distortion of constituent octahedra, a result of the gradual volume reduction via flexible polyhedral tilting. Moreover, the NLC axis varies almost linearly with the optical band gap, promoting its applications in high-precision devices. This work paves a way to exploit the negative compressibility effect for designing versatile materials with enhanced mechanical performance.
WOS关键词LOW THERMAL-EXPANSION ; LINEAR COMPRESSIBILITY ; HEXAGONAL SELENIUM ; POWDER DIFFRACTION ; POISSONS RATIO ; ANATASE TIO2 ; NANOCUBES ; TIF4 ; REO3
资助项目National Science Associated Funding (NSAF)[U1930401] ; National Science Associated Funding (NSAF)[U1530402] ; National Synchrotron Radiation Research Center (NSRRC) ; NSF[EAR-1634415] ; DOE[DE-FG02-94ER14466] ; DOE, Office of Basic Energy Sciences (BES)[DE-AC02-06CH11357]
WOS研究方向Chemistry ; Science & Technology - Other Topics ; Materials Science
语种英语
出版者AMER CHEMICAL SOC
WOS记录号WOS:000647271300042
资助机构National Science Associated Funding (NSAF) ; National Synchrotron Radiation Research Center (NSRRC) ; NSF ; DOE ; DOE, Office of Basic Energy Sciences (BES)
源URL[http://ir.idsse.ac.cn/handle/183446/8685]  
专题深海科学研究部_深海极端环境模拟研究实验室
通讯作者Lu, Yang
作者单位1.Chinese Acad Sci, CAS Key Lab Expt Study Deep Sea Extreme Condit, Inst Deep Sea Sci & Engn, Sanya 572000, Peoples R China
2.Ctr High Pressure Sci & Technol Adv Res, Shanghai 201203, Peoples R China
推荐引用方式
GB/T 7714		 Lu, Yang,Yan, Hao,Huang, Eugene,et al. Persistent Negative Compressibility Coupled to Optical Modulation in Empty-Perovskite TiOF2[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2021,125(16):8869-8875.
APA Lu, Yang,Yan, Hao,Huang, Eugene,&Chen, Bin.(2021).Persistent Negative Compressibility Coupled to Optical Modulation in Empty-Perovskite TiOF2.JOURNAL OF PHYSICAL CHEMISTRY C,125(16),8869-8875.
MLA Lu, Yang,et al."Persistent Negative Compressibility Coupled to Optical Modulation in Empty-Perovskite TiOF2".JOURNAL OF PHYSICAL CHEMISTRY C 125.16(2021):8869-8875.

入库方式： OAI收割

来源：深海科学与工程研究所

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