Dresden 2006 – wissenschaftliches Programm
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MA: Magnetismus
MA 20: Poster: Films(1-36) Transp(37-56) Ex.Bias(57-67) Spindyn(68-80) Micromag(81-95) Particle(96-109) Imag.+Surface(110-113) Spinelectr(114-122) Theory+Micromag(123-131) Spinstr+Aniso(132-142) MagMat(143-156) Meas(157,158) MolMag+Kondo(159-162) Postdead(163-)
MA 20.36: Poster
Dienstag, 28. März 2006, 15:15–19:15, P1
Characteristics of magnetic thin films on PS nano spheres — •Edward Amaladass1, Thomas Eimüller1,2, Bernd Ludescher1, Theresa Dragon1, and Giesela Schütz1 — 1MPI for Metals Research — 2Ruhr - Universität Bochum
The need for high density storage devices at low costs has initiated the search for new technologies such as patterned media. Magnetic thin films on self assembled polystyrene or silica nano-spheres are a very promising candidate [1]. Multilayered Fe/Gd and Co/Pt films were deposited on polystyrene spheres of different diameters. Polar MOKE measurements showed that the curved substrate has a substantial influence on the hysteresis loop. The fact that the film is separated in isolated islands of equal size leads to a very pronounced squareness of the magnetization loop with a coercive field in the order of a few millitesla. The micromagnetic behavior was probed with a high lateral resolution by scanning transmission x-ray microscopy (STXM) and photoemission electron microscopy (PEEM).
[1] M.Albrecht,Nature Materials 4, (2005) 203-206