SKM 2023 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 23: Poster Magnetism I
MA 23.34: Poster
Dienstag, 28. März 2023, 17:00–19:00, P1
Self-assembly as a tool to study microscale curvature and strain-dependent magnetic properties — •Balram Singh1, Jorge. A. Otálora2, Tong H. Kang1, Ivan Soldatov1, Dmitriy D. Karnaushenko3, Christian Becker3, Rudolf Schäfer1, Daniil Karnaushenko3, Volker Neu1, and Oliver G. Schmidt3 — 1Institute for Integrative Nanosciences, Leibniz IFW Dresden, 01069 Dresden, Germany. — 2Departamento de Física, Universidad Católica del Norte, Avenida Angamos 0610, Casilla 1280 Antofagasta, Chile — 3Center for Materials, Architectures and Integration of Nanomembranes (MAIN), Chemnitz University of Technology, 09126 Chemnitz, Germany
The extension of 2D ferromagnetic structures into 3D curved geometry enables tuning its magnetic properties such as magnetic anisotropy. Tuning the anisotropy with strain and curvature has become a promising ingredient in modern magnetoelectronic devices, however, has been limited to extended thin films and to only moderate bending. By applying a self-assembly rolling technique using a polymeric platform, we provide a template that allows homogeneous and controlled bending of a functional layer adhered to it, irrespective of its shape and size. This is an intriguing possibility to tailor the sign and magnitude of the surface strain of integrated, micron-sized devices. In this article, the impact of strain and curvature on the magnetic ground state and anisotropy is quantified for thin-film Permalloy micro-scale structures, fabricated on the surface of the tubular architectures, using solely electrical measurements.