Abstract
Preferential surface segregation in the Mo0.75Re0.25(100) surface region was investigated using high-resolution core-level spectroscopy with synchrotron radiation. The magnitude and direction of the surface core-level shifts observed in this study can be qualitatively understood by comparison to W and Mo core-level shifts. Measured core-level intensities are found to be consistent with the segregation of Mo to the surface of the alloy, with an enrichment of Re in the second layer (as found in previous investigations). It is inferred that both Tc and Os will segregate to the Mo0.75Re0.25(100) surface.
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References
Ossi, P. M., “Surface Segregation in Transition Metal Alloys: Experiments and Theories,” Surf. Sci. 201, L519 (1988).
Miedema, A. R., “Surface Segregation in Alloys of Transition Metals,” Z. Metallk. 69, 455 (1978).
Chelikowsky, J. R., “Predictions for Surface Segregation in Intermetallic Alloys,” Surf. Sci. 139, L197 (1984).
Mukherjee, S. and Moran-Lopez, J. L., “Theory of Surface Segregation in Transition-Metal Alloys,” Surf. Sci. 188, L742 (1987).
Gauthier, Y., Baudoing, R., Lundberg, M., and Rundgren, J., “Surface-Sandwich Segregation and Multilayer Relaxation on Pt0.5Ni0.5(110) Measured by Low-Energy Electron Diffraction: An Observation of Face-Related Segregation Reversal,” Phys. Rev. B 35, 7867 (1987) and references therein.
Davis, H. L., Zehner, D. M., Dötsch, B., Wimmer, A., and Müller, K., “Layer-By-Layer Segregation and Deep Multilayer Relaxation in the Mo75Re25(100) Surface,” Bull. Am. Phys. Soc. 36, 705 (1991).
Döll, R., Kottcke, M., Heinz, K., Hammer, L., Müller, K., and Zehner, D. M., “Application of Chemical Tensor LEED to MoxRe1-x(100) Surfaces,” Surface Science (in press).
Overbury, S. H., van den Oetelaar, R. J. A., and Zehner, D. M., “Surface Segregation in Mo0 75Re0 25(001) Studied by Low-Energy Alkali-Ion Scattering,” Phys. Rev. B 48, (19931993).
Spanjaard, D., Guillot, C., Desjonquères, M. C, Tréglia, G., and Lecante, J., “Surface Core Level Spectroscopy of Transition Metals: A New Tool for the Determination of Their Surface Structure,” Surf. Sci. Rep. 5, 1 (1985).
Tonner, B. P., “Performance of a Dual Toroidal Grating Monochromator,” Nucl. Iustrum. Meth. 172, 133 (1980).
Bartlett, R. J., Trela, W. J., Michaud, F. D., Southworth, S. H., Alkire, R. W., Roy, P., Rothe, R., and Walsh, P. J., “Characteristic and Performance of the Los Alamos VUV Beam Line at the NSLS,” Nucl. Instrum. Meth. A 266, 199 (1988).
Mårtensson, N., Saalfeld, H. B., Kuhlenbeck, H., and Neumann, M., “Structural Dependence of the 5d-metal Surface Energies as Deduced from Surface Core-Level Shift Measurements,” Phys. Rev. B 39, 8181 (1989).
Dötsch, B., Wimmer, A., Hammer, L., Müller, K., Davis, H. L., and Zehner, D. M., “LEEDS and HREELS Investigations of the Hydrogen-Covered Mo0.85Re0.15 Surface,” Bull. Am. Phys. Soc. 36, 705 (1991).
Heine, V., “s-d Interaction in Transition Metals,” Phys. Rev. 153, 673 (1967).
Wertheim, G. K., Citrin, P. H., and van der Veen, J. F., “Line Shapes in Surface-Atom Core-Level Photoemission from Ta(111), W(111), and W(100),” Phys. Rev. B 30, 4343 (1984).
Desjonquères, M. C., Spanjaard, D., Lassailly, Y., and Guillot, C., “On the Origin of the Variation of the Binding Energy Shifts of Core Levels Between Surface and Bulk Atoms in Transition Metals,” Solid State Comm. 34, 807 (1980).
Citrin, P. H. and Wertheim, G. K., “Photoemission from Surface-Atom Core Levels, Surface Densities of States, and Metal-Atom Clusters: A Unified Picture,” Phys. Rev. B 27, 3176(1983).
Rosengren, A. and Johansson, B., “Calculated Transition-Metal Surface Core-Level Binding-Energy Shifts,” Phys. Rev. B 22, 3706 (1980).
Lundgren, E., Johansson, U., Nyholm, R., and Andersen, J. N., “Surface Core-Level Shift of the Mo(110) Surface,” Phys. Rev. B 48, 5525 (1993) and references therein.
Lyman, P. F. and Zehner, D. M., to be published.
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Lyman, P.F., Zehner, D.M. (1994). Core-Level Spectroscopy Investigation of the Mo0.75Re0.25(100) Surface. In: Faulkner, J.S., Jordan, R.G. (eds) Metallic Alloys: Experimental and Theoretical Perspectives. NATO ASI Series, vol 256. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-1092-1_13
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DOI: https://doi.org/10.1007/978-94-011-1092-1_13
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