材料科学
钒
相(物质)
金属-绝缘体过渡
相图
氧气
薄膜
基质(水族馆)
二氧化二钒
金属
激光器
脉冲激光沉积
分析化学(期刊)
结晶学
纳米技术
光学
冶金
化学
海洋学
物理
有机化学
色谱法
地质学
作者
Amar Srivastava,H. Rotella,Surajit Saha,Banabir Pal,K. Gopinadhan,S. Mathew,M. Motapothula,Michal Marcin Dykas,Ping Yang,Eiji Okunishi,D. D. Sarma,T. Venkatesan
出处
期刊:APL Materials
[American Institute of Physics]
日期:2015-02-01
卷期号:3 (2)
被引量:87
摘要
We demonstrate the growth of high quality single phase films of VO2(A, B, and M) on SrTiO3 substrate by controlling the vanadium arrival rate (laser frequency) and oxidation of the V atoms. A phase diagram has been developed (oxygen pressure versus laser frequency) for various phases of VO2 and their electronic properties are investigated. VO2(A) phase is insulating VO2(B) phase is semi-metallic, and VO2(M) phase exhibits a metal-insulator transition, corroborated by photo-electron spectroscopic studies. The ability to control the growth of various polymorphs opens up the possibility for novel (hetero)structures promising new device functionalities.
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