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Volumn 101, Issue 23, 1997, Pages 4588-4596

Thermal stability of ultrathin Cr films on Pt(111)

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EID: 0345346992     PISSN: 15206106     EISSN: None     Source Type: Journal    
DOI: 10.1021/jp9627786     Document Type: Article
Times cited : (14)

References (34)
  • 12
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    • Constitution of Binary Alloys
    • McGraw-Hill: New York
    • Hansen, M. Constitution of Binary Alloys. In Constitution of Binary Alloys, 2nd ed.; McGraw-Hill: New York, 1958; p 553.
    • (1958) Constitution of Binary Alloys, 2nd Ed. , pp. 553
    • Hansen, M.1
  • 15
    • 0003260816 scopus 로고
    • Relativistic and Electron Correlation Effects in Molecules and Clusters
    • Malli, G. L., Ed.; Plenum: New York
    • Dupuis, M.; Chin, S.; Marquez, A. Relativistic and Electron Correlation Effects in Molecules and Clusters. In NATO ASI Series; Malli, G. L., Ed.; Plenum: New York, 1992.
    • (1992) NATO ASI Series
    • Dupuis, M.1    Chin, S.2    Marquez, A.3
  • 19
    • 5244260628 scopus 로고    scopus 로고
    • note
    • The intensity of ISS is very sensitive to small amounts of impurities adsorbed on surfaces, especially hydrogen. Desorption of such impurities may account for the fact that the Pt signals in Figure 4 are higher after annealing than before the Cr deposition. This may also cause the initial increase observed for the Cr signal from a Cr multilayer in the left panel of Figure 4, although a smoothening of the surface morphology may also play a role.
  • 21
    • 5244235756 scopus 로고    scopus 로고
    • note
    • If one compares the results shown in Table 1 with that of Figure 5, it is found that the onset for the Pt core level shift is at lower temperature (i.e., a 0.2 eV is found at 620 K, while in Figure 5 a similar shift is not seen until ∼800 K) for the coverages listed in Table 1. The early onset of the Pt core level shift is due to the fact that the coverages listed in Table 1 had been annealed for ∼-45 min versus the multilayer in Figure 5 in which the annealing times between data points was only 5 min. Enhanced diffusion and intermixing have occurred for the coverages listed in Table 1 and, hence, resulted in increased alloy formation and larger Pt core level shift for the same temperature.
  • 26
    • 0003406742 scopus 로고
    • Introduction to Solid State Physics
    • Wiley: New York
    • Kittel, C. Introduction to Solid State Physics. In Introduction to Solid State Physics; Wiley: New York, 1986; pp 24, 76.
    • (1986) Introduction to Solid State Physics , pp. 24
    • Kittel, C.1
  • 27
    • 0004204702 scopus 로고
    • The Elements
    • Clarendon Press: Oxford
    • Emsley, J. The Elements. In The Elements; Clarendon Press: Oxford, 1990; p 231.
    • (1990) The Elements , pp. 231
    • Emsley, J.1
  • 33
    • 5244357809 scopus 로고    scopus 로고
    • note
    • In certain cases, under very specific conditions (Cr concentration and annealing time and temperature) atomic-scale images of a two-dimensional Cr-Pt surface alloy were obtained. The structure is quite complicated and unique however, and a solid interpretation is being worked on at the moment. A discussion of this observation would go beyond the scope of the current paper.


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