Berlin 2018 – wissenschaftliches Programm
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DS: Fachverband Dünne Schichten
DS 11: Thin Film Properties: Structure, Morphology and Composition (XRD, TEM, XPS, SIMS, RBS, AFM, ...): Session II
DS 11.7: Vortrag
Dienstag, 13. März 2018, 11:00–11:15, H 0111
Vertically aligned metal-ceramic nanocomposites: Self-assembly of ultrathin metallic nanowires embedded in oxide matrices — •Marcel Hennes1, Xiaorong Weng1, Dominique Demaille1, Sarah Hidki1, Emiliano Fonda2, Yunlin Zheng1, and Franck Vidal1 — 1INSP, UPMC Sorbonne Universités, CNRS UMR 7588, 4 place Jussieu, 75005 Paris, France — 2Synchrotron SOLEIL, 91192 Gif-sur-Yvette, France
Vertically aligned metal – ceramic thin films constitute a novel class of hybrid materials characterized by the presence of metallic nanopillars embedded in a planar oxide matrix. For the development of these nanocomposites, pulsed laser deposition (PLD) synthesis relying on self-organized growth has recently emerged as a novel technique, complementing conventional template-assisted methods. On the one hand, self-assembly based procedures avoid cumbersome intermediate steps and permit to create arrays of ultrathin nanowires (d<5 nm) with extremely high densities (ρ>1011/cm2). On the other hand, the metallic and oxide phases exhibit vertical epitaxial coupling, which paves the way for strain engineering and synthesis of artificial multiferroics. In the present contribution, we present results on magnetic nanocomposites and put special emphasis on the possibility to grow alloy wires (CoxNi1−x and CoxPt1−x), a simple and efficient strategy to control the magnetic anisotropy of the system. We also address remaining hurdles that have to be overcome to achieve full control of the final thin film nanoarchitecture.