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Phase Transition Behaviour of VO2 Nanorods
Ying Luo1, Ming Li1, Guang-hai Li*1,2
1.Key Laboratory of Materials Physics, Anhui Key Laboratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, China;2.University of Science and Technology of China, Hefei 230026, China
Abstract:
The metal-insulator transition (MIT) of VO2(M) nanorods was studied. It was found that there were two MITs in the differential scanning calorimetry (DSC) curves of the VO2(M) nanorods, one situated at low temperature from -3 oC to 19 oC and the other was at high temperature of 65-74 oC. The low temperature MIT was always accompanied with VO2(B) nanorods, and the high temperature MIT existed singly only in pure VO2(M) nanorods. The mechanisms of these two MITs were analyzed and discussed.
Key words:  Vanadium dioxide, Nanorod, Metal-insulator transition
FundProject:
二氧化钒纳米棒的相变行为
罗莹1, 李明1, 李广海*1,2
1.中国科学院材料物理重点实验室,安徽省纳米材料和纳米技术重点实验室,中国科学院固体物理研究所,合肥230031;2.中国科学技术大学,合肥230026
摘要:
研究了VO2(M)纳米棒的金属绝缘体相变(MIT)行为.在VO2(M)纳米棒的DSC分析曲线上发现了两个MIT,分别位于低温和高温区.低温MIT总是伴随出现VO2(B)纳米棒,而独立的高温MIT出现在纯VO2(M)纳米棒.分析和讨论了这两个MIT的机制.
关键词:  二氧化钒,纳米棒,金属绝缘体相变
DOI:10.1063/1674-0068/27/04/471-474
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