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Characterization of self-organized crystalline Au nanoparticles embedded in epitaxially grown SrTiO3

Published online by Cambridge University Press:  08 April 2015

Hendrik Bernhardt ,
Christian Katzer ,
Andreas Undisz ,
Martin Drüe ,
Markus Rettenmayr ,
Ingo Uschmann  and
Frank Schmidl
Hendrik Bernhardt*
Affiliation:
Institute of Optics and Quantum Electronics, Friedrich Schiller University Jena, D-07743 Jena, Germany; and Helmholtz Institute Jena, D-07743 Jena, Germany
Christian Katzer
Affiliation:
Institute of Solid State Physics, Friedrich Schiller University Jena, D-07743 Jena, Germany
Andreas Undisz
Affiliation:
Otto Schott Institute of Materials Research, Friedrich Schiller University Jena, D-07743 Jena, Germany
Martin Drüe
Affiliation:
Otto Schott Institute of Materials Research, Friedrich Schiller University Jena, D-07743 Jena, Germany
Markus Rettenmayr
Affiliation:
Otto Schott Institute of Materials Research, Friedrich Schiller University Jena, D-07743 Jena, Germany
Ingo Uschmann
Affiliation:
Institute of Optics and Quantum Electronics, Friedrich Schiller University Jena, D-07743 Jena, Germany; and Helmholtz Institute Jena, D-07743 Jena, Germany
Frank Schmidl
Affiliation:
Institute of Solid State Physics, Friedrich Schiller University Jena, D-07743 Jena, Germany
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

Crystalline Au nanoparticles embedded in epitaxially grown SrTiO3 layers were prepared by an annealing and coating procedure of Au seed layers on SrTiO3 (STO) substrates. X-ray diffraction and transmission electron microscopy measurements were performed to investigate the size, shape, and deformation of the particles and their crystal orientation. The shape and size of the crystalline Au nanoparticles can be tuned by controlling the Au seed layer thickness and single crystalline elliptically shaped Au nanoparticles have been generated. Furthermore, the orientation of the surrounding SrTiO3 matrix changes significantly from homoepitaxially grown (001) to secondary (111) and (011) orientations for Au seed layers that are thicker than 4 nm. This is of great interest for modifying the electrical properties of SrTiO3 layers, whereas the anisotropically shaped crystalline particles are relevant for optical applications, due to localized surface plasmon resonances.

Type
Articles
Information
Journal of Materials Research , Volume 30 , Issue 7 , 14 April 2015 , pp. 973 - 980
Copyright
Copyright © Materials Research Society 2015 

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