2008/07/28 by Tiago S. Machado, Tatiana G. Rappoport, Luiz C. Sampaio +1
Materials Science · Physics and Astronomy · #Magnetic Properties and Applications #Magnetic properties of thin films #Physics of Superconductivity and Magnetism #cond-mat.mtrl-sci
paper · pdf · doi:10.1063/1.2985901
published as Appl. Phys. Lett. 93, 112507 (2008) · 4 pages, 4 figures
arxiv created 2008/07/28 · openalex publication_date 2008/09/15 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We investigate the effect of the magnetic anisotropy (Kz) on the static and dynamic properties of magnetic vortices in small disks. Our micromagnetic calculations reveal that for a range of Kz there is an enlargement of the vortex core. We analyze the influence of Kz on the dynamics of the vortex core magnetization reversal under the excitation of a pulsed field. The presence of Kz, which lead to better resolved vortex structures, allows us to discuss in more details the role played by the in-plane and perpendicular components of the gyrotropic field during the vortex-antivortex nucleation and annihilation.