Dresden 2009 – scientific programme

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DS: Fachverband Dünne Schichten

DS 31: Application of Thin Films II

DS 31.6: Talk

Thursday, March 26, 2009, 17:30–17:45, GER 37

Nanostructured magnetic FeCo/TiN thin film composites — •Hayo Brunken, Alan Savan, and Alfred Ludwig — Institute of Materials, Faculty of Mechanical Engineering, Ruhr-University Bochum, 44780 Bochum, Germany

In this study, magnetic thin film composites consisting of a nanostructured wear-resistance-coating and a nanogranular ferromagnetic component are presented. The magnetic thin film composites were prepared from a precursor multilayer thin film (FeCo/Ti) using magnetron sputtering. The multilayer precursor structure was deposited as a continuous composition spread on Si/SiO₂ substrates and transformed into a multiphase microstructure by thermal activation (typically 850^∘C, 1 h) in a reactive atmosphere (N₂). The characterization of the annealed thin films’ microstructure using X-ray diffraction indicated a FeCo (100) phase and the formation of a TiN (111) phase. Furthermore, it was found that the films show a coercivity below 2 mT and a high saturation magnetization. Funding by the DFG via the priority program 1299 is gratefully acknowledged.