The structure of Au-implanted MgO, SrTiO3 and LiNbO3 oxides has been studied by X-ray diffraction, optical absorption spectroscopy and Rutherford backscattering/channeling technique. The surface layers of SrTiO3 and LiNbO3 crystals are amorphised by the Au implantation, while the surface layer of MgO crystal stays in the crystalline state after the implantation. The amorphous layers of SrTiO3 and LiNbO3 crystals are recrystallized epitaxially by annealing at 600°C. The Au atoms implanted in these oxides existed in the form of metallic clusters even right after the implantation. Since the optical absorption in the Au-implanted dielectrics is almost independent of the kind of surrounding medium, the optical absorption originates mainly from the Au clusters embedded in the crystals.
|Number of pages||5|
|Journal||Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms|
|Publication status||Published - 1999 May|
ASJC Scopus subject areas
- Nuclear and High Energy Physics