Figure 1: Morphology of the Au nanostructures on a Ge(001) surface formed after annealing. | Scientific Reports

Figure 1: Morphology of the Au nanostructures on a Ge(001) surface formed after annealing.

From: Controlled growth of hexagonal gold nanostructures during thermally induced self-assembling on Ge(001) surface

Figure 1

(a,b) HR-SEM micrographs for post annealing of 6 ML Au/Ge(001) at 573 K (below Au/Ge eutectic) and 673 K (above Au/Ge eutectic); germanium substrate crystallographic directions are indicated. (c,d) corresponding EBSD Inverse Pole Figures (Au fcc and Au hcp phase respectively) in the Z direction. (e) schematic of orientation relationships for Au nanostructures below and above Au/Ge eutectic. (f) Average Au crystalline grain size as a function of the post annealing temperature. Exemplary SEM micrographs and EBSD IPF maps for post annealing at 673 K (above Au/Ge eutectic) for 3 ML (g), 12 ML (h) and 18 ML of Au (g). In all cases the hexagonal phase of Au was present. For all experiments, the temperature during the cooling down of the sample was decreased at rate of 15 K/min.

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