Regensburg 2007 – wissenschaftliches Programm

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DS: Fachverband Dünne Schichten

DS 13: Thin Film Analytics II

DS 13.4: Vortrag

Dienstag, 27. März 2007, 16:00–16:15, H34

Elemental Characterisation of Mn-, Mg- an Co- doped ZnO nanostructures — •Christoph Meinecke, Andreas Rahm, Jürgen Vogt, and Tilman Butz — Universität Leipzig, Fakultät für Physik und Experimentelle Physik II, Linnéstrasse 5, D-04103 Leipzig, Germany

ZnO based nanostructures have attracted increasing interest in recent years due to their structural diversity. Furthermore, transition metal doping (e.g. by Co or Mn) of ZnO films has been shown to create a promising ferromagnetic material for spintronics.

We report on the high-pressure pulsed laser deposition (PLD) growth of zinc oxide nanowires (300 - 500 nm in diameter) containing Co, Mg and Mn grown with NiO and Au catalysts.

Elemental analysis (PIXE, RBS) was carried out using a 2.25 MeV scanning proton beam with a spot size of app. 500 nm. This high spatial resolution at beam currents of app. 100 pA is necessary for the elemental analysis of single nanowires using RBS and PIXE.

Scanning electron microscopy, RBS and Particle induced X-ray emission measurements revealed differences between the compositions of nanowires compared to simultaneously grown films.