Indirect determination of miscibility properties of monolayer alloy films by simulation of thermal desorption spectra: Ag-Cu/Ru(0001)

We present a Monte Carlo scheme to simulate equilibrium structures and thermal desorption (TD) spectra of monolayer one- or two-component metal adsorbate films supported on a close-packed metal substrate surface. The scheme is used to determine the miscibility properties of an example system, Ag-Cu/...

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Veröffentlicht in:	Surface science 1994-06, Vol.313 (1), p.83-98
Hauptverfasser:	Schäfer, J., Reinhardt, P., Hoffschulz, H., Wandelt, K.
Format:	Artikel
Sprache:	eng
Schlagworte:	Adsorption and desorption kinetics evaporation and condensation Applied sciences Condensed matter: structure, mechanical and thermal properties Exact sciences and technology Metals. Metallurgy Phase transitions and critical phenomena Physics Solid surfaces and solid-solid interfaces Solid-fluid interfaces Surfaces and interfaces thin films and whiskers (structure and nonelectronic properties)
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Beschreibung
Zusammenfassung:	We present a Monte Carlo scheme to simulate equilibrium structures and thermal desorption (TD) spectra of monolayer one- or two-component metal adsorbate films supported on a close-packed metal substrate surface. The scheme is used to determine the miscibility properties of an example system, Ag-Cu/Ru(0001), by tuning the model parameters such that experimental TD spectra of this system are well reproduced. The corresponding set of parameters is shown to be unique. We discuss the role of lateral interactions and of algorithmic details. Finally, our results are compared with recently published data for the surface of a Ag-Cu bulk alloy very dilute in Ag [1].
ISSN:	0039-6028 1879-2758
DOI:	10.1016/0039-6028(94)91158-4