Gadolinium Exposed to Carbon Monoxide

The adsorption process of CO on gadohnium is strongly depending on the substrate temperature. Exposing Gd to CO results in a behavior which is illustrated in Fig. 4.20. The left image is related to the adsorption of 0.8 L CO at low 

An exposure sequence obtained at room temperature is presented in Fig. 4.21. For small dosages (1 L in Fig. 4.21a) the surface is relatively smooth with single localized areas being depressed. For higher exposures (20 L in Fig. 4.21b) the appearance has been changed. As will be discussed in more detail below the rough surface points to the creation of carbonate species. 

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