Katsube Daiki, Ojima Shoki, Inami Eiichi, Abe Masayuki
Graduate School of Engineering, Nagaoka University of Technology, 1603-1 Kamitomiokamachi, Nagaoka, Niigata 940-2188, Japan.
Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka 560-8531, Japan.
Beilstein J Nanotechnol. 2020 Mar 10;11:443-449. doi: 10.3762/bjnano.11.35. eCollection 2020.
The structure of the rutile TiO(110)-(1 × 2) reconstructed surface is a phase induced by oxygen reduction. There is ongoing debate about the (1 × 2) reconstruction, because it cannot be clarified whether the (1 × 2) structure is formed over a wide area or only locally using macroscopic analysis methods such as diffraction. We used non-contact atomic force microscopy, scanning tunneling microscopy, and low-energy electron diffraction at room temperature to characterize the surface. TiO rows appeared as bright spots in both NC-AFM and STM images observed in the same area. High-resolution NC-AFM images revealed that the rutile TiO(110)-(1 × 2) reconstructed surface is composed of two domains with different types of asymmetric rows.
金红石型TiO(110)-(1×2)重构表面的结构是由氧还原诱导产生的一种相。关于(1×2)重构存在持续的争论，因为使用诸如衍射等宏观分析方法无法明确(1×2)结构是在大面积形成还是仅局部形成。我们在室温下使用非接触原子力显微镜、扫描隧道显微镜和低能电子衍射来表征该表面。在同一区域观察到的NC-AFM和STM图像中，TiO行均呈现为亮点。高分辨率NC-AFM图像显示，金红石型TiO(110)-(1×2)重构表面由具有不同类型不对称行的两个畴组成。
