摘要
本文揭示了SrVO3和Sr2V2O7薄膜通过氧气或真空气氛中热处理来相互转化的现象.基于该现象,高质量的Sr2V2O7外延薄膜被间接合成.性能表征结果显示半透明金属性的SrVO3与透明绝缘的Sr2V2O7可以实现可逆转换,该现象在可控的电学、光学器件中具有潜在应用价值.
Transition-metal oxides have attracted much attention due to its abundant crystalline phases and intriguing physical properties. However, some of these compounds are difficult to be fabricated directly in film form due to the ease of valence variation of transition-metal elements.In this work, we reveal the reversible structural transition between SrVO3 and Sr2V2O7 films via thermal treatment in oxygen atmosphere or in vacuum. Based on this, Sr2V2O7 epitaxial films are successfully synthesized and studied. Property characterizations show that the semitransparent and metallic SrVO3 could reversibly switch into transparent and insulating Sr2V2O7, implying potential applications in controllable electronic and optical devices.
作者
古雪姣
罗震林
董永齐
周靖添
徐晗
洪宾
高琛
Xue-jiao Gu;Zhen-lin Luo;Yong-qi Dong;Jing-tian Zhou;Han Xu;Bin Hong;Chen Gao(National Synchrotron Radiation Laboratory&CAS Key Laboratory of Materials for Energy Conversion,University of Science and Technology of China,Hefei 230026,China;.Hefei Innovation Research Institute,School of Microelectronics,Beihang University,Hefei 230013,China;Beijing Advanced Sciences and Innovation Center of Chinese Academy of Sciences,Beijing 101407,China)
基金
supported by the National Key R&D Program of China(No.2016YFA0300102)
the National Natural Science Foundation of China(No.11675179,No.11434009,and No.11374010)
the Fundamental Research Funds for the Central Universities(No.WK2340000065)
partially carried out at the University of Science and Technology of China(USTC)center for Micro and Nanoscale Research and Fabrication
the support from the magnetic circular dichroism endstation at Hefei Light Source
关键词
过渡金属氧化物
可逆转变
可控的电子和光学器件
Transition-metal oxides
Reversible transition
Controllable electronic and optical devices
