Browsing by Author "Roos, B."
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Item Enhanced Coercivity of Exchange-bias Fe/MnPd Bilayers(1999) Tang, Y. J.; Roos, B.; Mewes, T.; Demokritov, S. O.; Hillebrands, B.; Wang, Y. J.; University of Alabama TuscaloosaWe present detailed studies of the enhanced coercivity of exchange-bias bilayer Fe/MnPd, both experimentally and theoretically. We have demonstrated that the existence of large higher-order anisotropies due to exchange coupling between different Fe and MnPd layers can account for the large increase of coercivity in the Fe/MnPd system. The linear dependence of coercivity on inverse Fe thickness is well explained by a phenomenological model by introducing higher-order anisotropy terms into the total free energy of the system.