Surface Alloys and Alloy Surfaces

Edited by

  • D. Woodruff, University of Warwick, Warwick, U.K.

DescriptionSurface Alloys and Alloy Surfaces is concerned with the structural, compositional, electronic and chemical properties of the surfaces of solids in which the surface layers, at least are alloyed. Two different categories of system are covered - the surfaces of bulk alloys (alloy surfaces) and surface phases in which one or more outermost atomic layers are alloyed, while the underlying bulk involves no such intermixing (surface alloys).Importance of TopicThe surfaces of bulk alloys have long been known to be of practical interest for their chemical properties. It has also long been known that the surface composition of such alloys commonly differs from that of the underlying bulk. However, our understanding of these chemical and physical phenomena is far from complete and the application of surface science methods to investigate these phenomena is a manifestation of a general trend to study the surfaces of increasing complexity. Surface alloy formation, as a much more recently recognized phenomenon deserves more attention.Why This TitleThis title is important as it provides new insights into a mixture of new and old problems. It is the first to cover the important mixture of material on surface alloys and alloy surfaces. Each chapter is written by experts in different areas of these two interrelated topics, covering theory and experiment, physics and chemistry, geometrical and electronic structure. The coverage of the surface alloy topic is especially novel as it is relatively newly-recognised as quite a common phenomenon.
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For research institutes concerned with surface science, condensed matter physics, physical chemistry and catalytic chemistry. For university departments and libraries concerned with physics, chemistry, chemical engineering and materials science.


Book information

  • Published: August 2002
  • Imprint: ELSEVIER
  • ISBN: 978-0-444-51152-2

Table of Contents

Local Equilibrium Properties of Metallic Surface Alloys (A.V. Ruban et al.). Surface energy. Stable surface alloy configurations. Generic classes of surface alloying. General trends for the surface mixing energies in transition metal alloys. General trends for the surface segregation energies in transition metal alloys. Island formation: multilayer versus monolayer growth. Bulk-type ordered surface alloys. Alternative ordered structures on the surface.
Atomistic Modelling of Surface Alloys(G.Bozzolo, J.E. Garces). The BFS method. BFS modelling of surface alloys.
Alloy Surface Segregation and Ordering Phenomena: Recent Progress (M.Polak, L. Rubinovich). Segregation in multi-element alloys. Surface segregation in ordered alloys. Segregation in a bi-phase binary alloy.
Segregation and Surface Chemical Ordering - An Experimental View on the Atomic Scale (M. Schmid, P. Varga). Chemical discrimination on bimetallic surfaces with atomic resolution by STM. Segregation on alloys - surface and subsurface composition. Chemical ordering of alloy surfaces. Implications for adsorption on alloys.
Surface Alloying and De-Alloying of Pb on Single-Crystal Cu Surfaces (G.L. Kellogg). Experimental and theoretical techniques. Atomic structure, surface alloying and de-alloying. Concluding remarks.
Surface Alloys and Alloy Surfaces: The Platinum-Tin System(S. Speller, U. Bardi). The platinum-tin system. Surface alloys obtained depositing tin on platinum surfaces. Discussion.
Alkali-Aluminum Surface Alloys (D.L Adams, J.N. Andersen). Experimental methods. Adsorption on Al(111). Adsorption on Al(100). Adsorption on Al(110). Phase transitions. The role of DFT calculations.
The Structure of Surface Alloy Phases on Metallic Substrates (D.P. Woodruff, E. Vlieg). Case studies. Interatomic distances in surface alloys. More complex systems.
Surface Alloy Formation on Cu{100} (C.J. Barnes). Cu{100}-c(2x2)-X (X=Au,Pd,Mn) surface alloys. Surface alloy formation upon Co, Fe and Ni adsorption. Surface alloy formation upon alkali and alkaline earth metal adsorption. De-alloying transitions: adsorption of group IIIA, IVA and VA metals. Underlayer 2D alloys and overlayer to underlayer transitions. Formation of ordered multilayer alloys.
Surface and Sub-Surface Alloy Formation Connected with Ordered Superstructures (H. Niehus). Surfaces of ordered bulk alloys. Surface alloys of bulk immiscible constituents. Alloy surfaces as substrates for ordered superstructures.
Surface Structure and Catalytic Activity of Palladium Overlayers With 1,3-Butadiene Hydrogenation (J.C. Bertolini, Y. Jugnet). Experimental approach. The 1,3-butadiene hydrogenation reaction. Surface and reactivity of Pd based alloy surfaces. Surface and reactivity of Pd deposits.
Electronic and Chemical Properties of Palladium In Bimetallic Systems: How Much Do We Know About Heteronuclear Metal-Metal Bonding? (J.A. Rodriguez). Photoemission studies. Thermal desorption studies. CO chemisorption studies. Models for bimetallic bonding. Theoretical studies.
Interaction of Sulphur with Bimetallic Surfaces: Effects of Structural, Electronic and Chemical Properties (J.A. Rodriguez, J. Hrbek).Repulsive interactions between gold and sulphur on transition metal surfaces.Interaction of sulphur with Ag/Ru(0001)and Cu/Ru(0001).Admetal promoted sulphidation of Pt(111)and Mo(110).Bimetallic bonding and the prevention of sulphur poisoning.
Adsorbate Induced Segregation at Bimetallic Surfaces.Adsorbate induced segregation.Techniques for characterising adsorbate induced segregation.