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首页> 外文期刊>Japanese Journal of Applied Physics. Part 1, Regular Papers, Brief Communications & Review Papers >Investigation of Interaction of Hydrogen with Oxygen-Induced Nb(100) Surfaces by Scanning Tunneling Microscopy
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Investigation of Interaction of Hydrogen with Oxygen-Induced Nb(100) Surfaces by Scanning Tunneling Microscopy

机译：扫描隧道显微镜研究氢与氧诱导的Nb（100）表面的相互作用

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摘要

The structural conversions of oxygen-induced surfaces of Nb(100) are investigated during exposure to hydrogen at room temperature and subsequent heating at 640 K in ultrahigh vacuum (UHV) by low-energy electron diffraction (LEED) and scanning tunneling microscopy (STM). The oxygen-adsorbed c(2 x 2)-0 structure is gradually converted into a (1 x 1)-H structure with dark spots and bright clusters upon exposure to 15 L of hydrogen at room temperature, and then into a disordered structure by further exposure to 50 L of hydrogen. Such a disordered structure is changed into a (1 x 1) structure with line defects after continuous heating at 640 K in UHV. The oxide-covered (3 x 1)-O structure is not significantly altered upon exposure to 300 L of hydrogen at room temperature. The interaction of hydrogen with the oxygen-induced Nb(100) surfaces is discussed.
机译：通过低能电子衍射（LEED）和扫描隧道显微镜（STM）研究了在室温下暴露于氢气中以及随后在640 K在超高真空（UHV）中加热的过程中，氧诱导Nb（100）表面的结构转化。 。氧吸附的c（2 x 2）-0结构在室温下暴露于15 L氢气中后逐渐转变为具有黑点和亮簇的（1 x 1）-H结构，然后通过进一步暴露于50 L氢气中。在UHV中以640 K连续加热后，这种无序结构变成具有线缺陷的（1 x 1）结构。在室温下暴露于300 L氢气后，氧化物覆盖的（3 x 1）-O结构不会发生明显变化。讨论了氢与氧诱导的Nb（100）表面的相互作用。

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