Abstract

We have studied the crystal orientation of Ag thin films on a [Formula: see text] surface using grazing incidence X-ray diffraction with synchrotron radiation. After preparation of a [Formula: see text] surface, 50 ML Ag was deposited on the [Formula: see text] at the substrate temperature of 50–300 K. We found the [Formula: see text] structure at the interface. As for the Ag film, the Ag}111{ plane was mainly grown on the surface. The domain size of the Ag films strongly depends on the substrate temperature of the deposition. The domain size is found to be regulated by an original domain size of the [Formula: see text] surface before Ag deposition, which relates to the surface-structural phase transition. By scattering intensity measurements in the reciprocal lattice space, we found streaky scattering along the [Formula: see text] direction parallel to the surface. This scattering is thought to originate from the CTR (crystal truncation rod) scattering from a sidewall plane of the Ag {111} nanometer-scale crystals.

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