Crystallographic investigation of Au nanoparticles embedded in a SrTiO\(_3\) thin film for plasmonics applications by means of synchrotron radiation

Self-organized monocrystalline Au nanoparticles with potential applications in plasmonics are grown in a SrTiO\(_3\) matrix by a novel two-step deposition process. The crystalline preferred orientation of these Au nanoparticles is investigated by synchrotron hard x-ray diffraction. Nanoparticles pre...

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Bibliographic Details
Published in:arXiv.org 2014-11
Main Authors: Pincini, Davide, Mazzoli, Claudio, Bernhardt, Hendrik, Katzer, Christian, Schimdl, Frank, Uschmann, Ingo, Detlefs, Carsten
Format: Article
Language:English
Subjects:
Crystallography
Diffraction
Gold
Nanoparticles
Plasmonics
Preferred orientation
Substrates
Synchrotron radiation
Thickness
Thin films
X-ray diffraction
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Summary:Self-organized monocrystalline Au nanoparticles with potential applications in plasmonics are grown in a SrTiO\(_3\) matrix by a novel two-step deposition process. The crystalline preferred orientation of these Au nanoparticles is investigated by synchrotron hard x-ray diffraction. Nanoparticles preferentially align with the (111) direction along the substrate normal (001), whereas two in-plane orientations are found with \([110]_{SrTiO_3} \: || \: [110]_{Au}\) and \([100]_{SrTiO_3} \: || \: [110]_{Au}\). Additionally, a smaller diffraction signal from nanoparticles with the (001) direction parallel to the substrate normal (001) is observed; once again, two in-plane orientations are found, with \([100]_{SrTiO_3} \: || \: [100]_{Au}\) and \([100]_{SrTiO_3} \: || \: [110]_{Au}\). The populations of the two in-plane orientations are found to depend on the thickness of the gold film deposited in the first step of the growth.
ISSN:2331-8422
DOI:10.48550/arxiv.1411.5617