doi:10.1088/1361-6463/acdd0eengRomán, A.López Pedroso, A.Bouzehouane, K.Gómez, J. E.Butera, A.Aguirre, M. H.Soares, M. MedeirosGarcia, C.Steren, L. B.Magnetization reversal modes and coercive field dependence on perpendicular magnetic anisotropy in FePt thin filmsART-2023-135131The competition between shape and perpendicular magnetic anisotropies in magnetic thin films gives rise to unusual magnetic behaviors. In ferromagnetic thin films, the presence of an out-of-plane component of the magnetic anisotropy may induce a transition from planar to stripe-like magnetic domains above a critical thickness, $t_{\mathrm c}$. In this article, we present a detailed study of the magnetization switching mechanism in FePt thin films, where this phenomenon is observed. Using micromagnetic simulations and experiments, we found that below $t_{\mathrm c}$ the reversal mechanism is well described by the two-phase model while above this thickness the magnetization within each stripe reverses by coherent rotation. We also analyzed the out-of-plane component of the magnetic anisotropy and its temperature dependence, probing that substrate-induced strains are responsible for the abnormal coercive field behavior observed for FePt films with $t\gt t_{\mathrm c}$.2023http://zaguan.unizar.es/record/13017210.1088/1361-6463/acdd0ehttp://zaguan.unizar.es/record/130172oai:zaguan.unizar.es:130172info:eu-repo/grantAgreement/EC/H2020/734187/EU/Spin conversion, logic storage in oxide-based electronics/SPICOLOSTThis project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 734187-SPICOLOSTJOURNAL OF PHYSICS D-APPLIED PHYSICS 56, 39 (2023), 395002 [14 pp.]by-nc-ndhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/info:eu-repo/semantics/openAccess