Decoupling the Lattice Distortion and Charge Doping Effects on the Phase Transition Behavior of VO2 by Titanium (Ti4+) Doping

	Decoupling the Lattice Distortion and Charge Doping Effects on the Phase Transition Behavior of VO2 by Titanium (Ti4+) Doping
	Wu, YF; Fan, LL; Liu, QH; Chen, S; Huang, WF; Chen, FH; Liao, GM; Zou, CW; Wu, ZY; Wu ZY(吴自玉)
刊名	SCIENTIFIC REPORTS
	2015
卷号	5 页码:9328
英文摘要	The mechanism for regulating the critical temperature (T-C) of metal-insulator transition (MIT) in ions-doped VO2 systems is still a matter of debate, in particular, the unclear roles of lattice distortion and charge doping effects. To rule out the charge doping effect on the regulation of T-C, we investigated Ti4+- doped VO2 (TixV1-xO2) system. It was observed that the T-C of TixV1-xO2 samples first slightly decreased and then increased with increasing Ti concentration. X-ray absorption fine structure (XAFS) spectroscopy was used to explore the electronic states and local lattice structures around both Ti and V atoms in TixV1-xO2 samples. Our results revealed the local structure evolution from the initial anatase to the rutile-like structure around the Ti dopants. Furthermore, the host monoclinic VO2 lattice, specifically, the VO6 octahedra would be subtly distorted by Ti doping. The distortion of VO6 octahedra and the variation of T-C showed almost the similar trend, confirming the direct effect of local structural perturbations on the phase transition behavior. By comparing other ion-doping systems, we point out that the charge doping is more effective than the lattice distortion in modulating the MIT behavior of VO2 materials.
学科主题	Science & Technology - Other Topics
类目[WOS]	Multidisciplinary Sciences
收录类别	SCI
WOS记录号	WOS:000354106400001
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/228533]
专题	高能物理研究所_多学科研究中心
推荐引用方式 GB/T 7714	Wu, YF,Fan, LL,Liu, QH,et al. Decoupling the Lattice Distortion and Charge Doping Effects on the Phase Transition Behavior of VO2 by Titanium (Ti4+) Doping[J]. SCIENTIFIC REPORTS,2015,5:9328.
APA	Wu, YF.,Fan, LL.,Liu, QH.,Chen, S.,Huang, WF.,...&吴自玉.(2015).Decoupling the Lattice Distortion and Charge Doping Effects on the Phase Transition Behavior of VO2 by Titanium (Ti4+) Doping.SCIENTIFIC REPORTS,5,9328.
MLA	Wu, YF,et al."Decoupling the Lattice Distortion and Charge Doping Effects on the Phase Transition Behavior of VO2 by Titanium (Ti4+) Doping".SCIENTIFIC REPORTS 5(2015):9328.