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
学科分类Science & Technology - Other Topics
DOI10.1038/srep09328
文章类型Article
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.
类目[WOS]Multidisciplinary Sciences
收录类别SCI
WOS记录号WOS:000354106400001
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被引频次:13[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/228533
专题中国科学院高能物理研究所_多学科研究中心_期刊论文
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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.
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