Bachmann Magdalena, Memmel Norbert, Bertel Erminald, Denk Mariella, Hohage Michael, Zeppenfeld Peter
Institute of Physical Chemistry, University of Innsbruck, Innrain 52a, A-6020 Innsbruck, Austria.
Appl Surf Sci. 2012 Oct 1;258(24):10123-10127. doi: 10.1016/j.apsusc.2012.06.089.
Reflectance difference spectroscopy (RDS) is applied to follow in situ the preparation of clean and carburized W(1 1 0) surfaces and to study the temperature-induced transition between the R(15 × 3) and R(15 × 12) carbon/tungsten surface phases. RDS data for this transition are compared to data obtained from Auger-electron spectroscopy and low-energy electron diffraction. All techniques reveal that this transition, occurring around 1870 K, is reversible with a small hysteresis, indicating a first-order-like behaviour. The present results also prove a high surface sensitivity of RDS, which is attributed to the excitation of electronic p-like surface resonances of W(1 1 0).
反射差分光谱法（RDS）被用于原位跟踪清洁和渗碳的W(1 1 0)表面的制备过程，并研究温度诱导的R(15×3)和R(15×12)碳/钨表面相之间的转变。将该转变的RDS数据与俄歇电子能谱和低能电子衍射获得的数据进行比较。所有技术均表明，这种在1870 K左右发生的转变是可逆的，且滞后较小，表明具有类似一级相变的行为。目前的结果还证明了RDS具有高表面灵敏度，这归因于W(1 1 0)的类p电子表面共振的激发。
Zotero 插件
