Regensburg 2007 – scientific programme
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MA: Fachverband Magnetismus
MA 15: Poster:ThinFilms(1-33),Transp.(34-49),ExchBias(50-56),
Spindynamics(57-70),Micro-nanostr.Mat.(71-82),
Particles/Clust.(83-88), Mag.Imag./Surface(89-96),
Spinelectronics(97-109), Theory/Micromag.(110-116),
Spinstruct/Phasetr.(117-128),Magn.Mat.(129-139),
Aniso.+Measuring(140-145), MolMag.(146-152),
MSMA(153-156)
MA 15.8: Poster
Tuesday, March 27, 2007, 15:00–19:00, Poster A
Magnetism and Magnetic Microstructure in Heusler Alloy Based Thin Film Systems — •Alexander Kaiser, Diana Rata, Stefan Cramm, and Claus M. Schneider — Institut für Festkörperforschung IFF-IEE, Forschungszentrum Jülich, Germany
Due to high spin polarization at the Fermi level and structural compatibility to compound semiconductors half-metallic Heusler alloys are promising materials for spintronic devices such as magnetic tunnel junctions and spin injection elements. For this study single films and magnetic tunnel junctions of the Heusler alloys Co2MnSi and Co2FeSi were sputter-deposited. The films have been magnetically characterized by SQUID and the micromagnetic structure has been studied by photoelectron emission microscopy. By microstructuring the films the influence of a magnetic stray field could be investigated. Ferromagnetic coupling of the Co2MnSi/MgO/Co2FeSi trilayers was shown by exploiting the elemental selectivity of the X-PEEM technique.