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

doi:10.1021/acs.jpcc.1c01601

CORC > 深海科学与工程研究所 > 中国科学院深海科学与工程研究所 > 深海科学研究部 > 深海极端环境模拟研究实验室

	Persistent Negative Compressibility Coupled to Optical Modulation in Empty-Perovskite TiOF2
	Lu, Yang 2; Yan, Hao 1; Huang, Eugene 2; Chen, Bin 2
刊名	JOURNAL OF PHYSICAL CHEMISTRY C
	2021-04-29
卷号	125 期号:16 页码:8869-8875
ISSN号	1932-7447
DOI	10.1021/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.
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关键词	LOW THERMAL-EXPANSION ; LINEAR COMPRESSIBILITY ; HEXAGONAL SELENIUM ; POWDER DIFFRACTION ; POISSONS RATIO ; ANATASE TIO2 ; NANOCUBES ; TIF4 ; REO3
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)
内容类型	期刊论文
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.