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- W2057923891 endingPage "1074" @default.
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- W2057923891 abstract "Pd and bimetallic PdCu particles (2–20 nm), epitaxially grown on oxide substrates were characterised by HRTEM, WBDF imaging, numerical analysis and image simulations. Their shape and the structure of the interface were determined according to the particle size. All the particles are octahedra or tetrahedra depending on the symmetry of the substrate, limited by (100) and (111) faces. The ratio of interface energies was estimated as a function of the particle sizes. Deviations of the surface tension anisotropy, compared to the macroscopic fcc crystals, were observed together with the sharpening of the angles between the limiting faces. It was shown that the particle shape strongly depends on the interactions between the metal and the oxide substrate and on the structure of the interface. Indeed, polyhedral shapes with re-entrant angles at the interface were found in particles with defects or dislocations at the interface. On the opposite, particles perfectly accommodated to the substrate at the atomic scale did not present any re-entrant angles." @default.
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- W2057923891 date "1998-10-01" @default.
- W2057923891 modified "2023-10-18" @default.
- W2057923891 title "Epitaxial Growth of Clusters on Defined Oxide Surfaces-HRTEM Studies" @default.
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- W2057923891 doi "https://doi.org/10.1002/(sici)1521-4079(199810)33:7/8<1061::aid-crat1061>3.0.co;2-1" @default.
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