Magnetic coupling and exchange stiffness in striped filmsT. Tolinski1, J. Lindner1, K. Lenz1, K. Baberschke1, A. Ney2, T. Hesjedal2, C. Pampuch2, L. Däweritz2, R. Koch2 and K. H. Ploog2
1 Institut für Experimentalphysik, Freie Universität Berlin Arnimallee 14, D-14195 Berlin, Germany
2 Paul-Drude-Institut für Festkörperelektronik Hausvogteiplatz 5-7, D-10117 Berlin, Germany
received 11 August 2004; accepted in final form 12 October 2004
published online 5 November 2004
We provide the first direct evidence of interactions in a self-organized pattern of coexisting ferromagnetic and paramagnetic stripe domains as a function of the coupling strength between the stripes (inter) and within one stripe (intra). The value of the intra exchange constant is determined unambiguously from spin wave resonance. Additionally, in-plane ferromagnetic resonance measurements reveal the presence of a strong coupling between the neighboring stripes, which can dominate the weak intra-stripe interaction.
75.70.Ak - Magnetic properties of monolayers and thin films.
75.60.-d - Domain effects, magnetization curves, and hysteresis.
© EDP Sciences 2004