Dresden 2017 – scientific programme

Parts | Days | Selection | Search | Updates | Downloads | Help

O: Fachverband Oberflächenphysik

O 73: Nanostructures at Surfaces: Metals, Oxides and Semiconductors III

O 73.4: Talk

Wednesday, March 22, 2017, 11:15–11:30, REC/PHY C213

On the autocatalytic growth and magnetic properties of Fe nanostructures fabricated via focused electron beam induced processing — Fan Tu, Martin Drost, Florian Vollnhals, Esther Carrasco, Andreas Späth, Rainer Fink, and •Hubertus Marbach — Lehrstuhl für Physikalische Chemie II, Universität Erlangen-Nürnberg, Egerlandstr. 3, D-91058, Erlangen, Germany

Electron beam induced deposition (EBID) was used in combination with autocatalytic growth (AG) processes to lithographically fabricate high purity (> 95%) Fe deposits from the precursor iron-pentacarbonyl in our UHV system [1-3]. In this paper correspondingly fabricated EBID-Fe deposits were investigated in detail by high resolution transmission electron microscopy (HRTEM) and scanning transmission X-ray microscopy (STXM). STXM operated in X-ray magnetic circular dicroism mode at the PoILux beamline (Swiss Light Source) allows in addition to the microscopic insights for a detailed magnetic characterization of the Fe structures depending on their actual shape [3]. We report on the thickness and lateral dimension dependent magnetic coercivity, the chemical nature and the atomic order of the Fe deposits.

This work was funded by the DFG through grant MA 4246/1-2, research unit FOR 1878/funCOS; and the Excellence Cluster Engineering of Advanced Materials granted to the FAU Erlangen-Nürnberg.

[1] T. Lukasczyk, et al., Small, 4 (2008) 841.

[2] H. Marbach, Appl. Phys. A., 117 (2014) 987.

[3] F. Tu, et al., Nanotechnology, 27 (2016) 355302.