TEMPERATURE-DEPENDENT INTERFACE MAGNETISM AND MAGNETIZATION REVERSAL IN CO PT MULTILAYERS/

We report on the temperature dependence of the magnetic properties and interface magnetism of Co/Pt multilayers. The magnetic properties inc luding magnetization and anisotropy change substantially as the temper ature varies from 300 to 10 K for samples with Co layer thickness in t he range from 3 to 7 angstrom. The interface anisotropy of about 0.38 erg/cm2 is nearly independent of temperature. The magnetization revers al is dominated by domain wall motion for the thinner Co layers and do minated by nucleation for the thicker Co layers.