Regensburg 2004 – wissenschaftliches Programm

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MA: Magnetismus

MA 13: Poster:Schichten(1-23),Spinabh.Trsp(24-41),Exch.Bias(42-56),Spindyn.(57-67),Mikromag.(68-76),Partikel(77-90),Spinelektr.(91-97),Elektr.Theo.(98-99),Mikromag+PhasÜ+Aniso.(100-105),Magn.Mat.(106-118),Messmethod.(119-121),Obflm.+Abbverf.(122-123)

MA 13.74: Poster

Dienstag, 9. März 2004, 15:00–19:00, Bereich A

Magnetization of a two phase nano-amorphous ferromagnet — •H. Bremers, J. Hesse, O. Hupe, C. Hofmeister, and O. Michele — Institut für Metall- und Nukleare Festkörperphysik, TU Braunschweig, Mendelssohnstr. 3, 38106 Braunschweig

At the last spring conference we have presented a description of magnetization measurements of the System Fe-Nb-Cu-B after different heat treatments. With increasing temperature of the treatment this leads to an increasing concentration of nanometer sized iron bcc grains in a remaining ferromagnetic amorphous matrix. The parameters gained by this description allow us to give a complete, but idealized picture of the magnetic behaviour of such systems. By using this description we are able to extend the magnetization curve towards high tempartures which are not accessible to measurements due to further crystallisation of the sample.