Dresden 2011 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 63: Poster II (Surface Magnetism/ Magnetic Imaging/ Topological Insulators/ Spin Structures and Magnetic Phase Transitions/ Graphene/ Magnetic Thin Films/ Magnetic Semiconductors/ Magnetic Half-metals and Oxides/ Spin-dependent Transport/ Spin Excitations and Spin Torque/ Spin Injection and Spin Currents in Heterostructures/ Spintronics/ Magnetic Storage and Applications)

MA 63.25: Poster

Freitag, 18. März 2011, 11:00–14:00, P2

Characterisation of magnetic thin films on MgO(100) — •Hendrik Bettermann, Wolfgang Rosellen, and Mathias Getzlaff — Institute of Applied Physics,University Duesseldorf

Nanoparticles on surfaces become more and more interesting from a technological point of view like storage technology due to their size dependent electronic and magnetic properties. Therefore it is important to have access to the structure of deposited particles at different magnetic substrates. In the past it was shown that the interaction between surface and nanoparticle plays a predominant role for the particle shape and morphology. Both are influenced by the landing process and the interface and therefore on the substrate.

The focus of our investigation is on magnetic particles consisting of Fe, Co, and their alloys preformed with an Arc Cluster Ion Source (ACIS) and subsequently deposited on magnetic thin films. MgO(100) substrates are used for quick and easy access to clean, well-defined and single crystalline Fe, Co, and Ni thin films. These ultrathin films are investigated and characterised by the means of LEED (low energy electron defraction), AES (Auger electron spectoscopy) and STM (scanning tunneling microscopy).