Berlin 2008 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 28: Magnetic Thin Films III

MA 28.10: Vortrag

Donnerstag, 28. Februar 2008, 16:45–17:00, H 1012

A new magnetic octupole setup for in situ investigations on magnetic nanostructures — •Norman Wilken, Stefan Polei, Nagamony Ponpandian, Armin Kleibert, and Karl-Heinz Meiwes-Broer — Institut für Physik, Universität Rostock, 18051 Rostock, Germany

Magnetic clusters and nanostructures are highly interesting candidates for many applications as ,e.g., magnetic mass storage devices. Thus, strong efforts have been undertaken in the past in order to prepare and study the properties of nanosized magnets. In particular techniques based on magneto-optics in the visible as well as in the soft x-ray regime [for instance the resonant x-ray magnetic circular dichroism (XMCD)] have been successfully applied in many investigations, see e.g. Ref.1. In this contribution we will present a new experimental setup enabling for sophisticated studies on magnetic nanostructures. The main part of the setup is a magnetic octupole consisting of eight resistive magnets, equally spaced on the corners of a cube. This configuration provides an omnidirectional field vector with a magnitude of up to 1 Tesla. A sample preparation chamber as well as the arc cluster ion source (ACIS) being attached to the magnet chamber allow for full in situ preparation and investigation on a broad variety of magnetic nanostructures [2]. Recent experiments on magnetic thin film samples carried out at BESSY reveal the capabilities for transmission, reflection and absorption experiments in the soft x-ray regime.

[1] J. Bansmann et al., Surf. Sci. Reports 56, 189 (2005)

[2] A. Kleibert et al., J. Appl. Phys. 101, 114318 (2007)