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MA: Fachverband Magnetismus

MA 42: Molecular Magnetism and Magnetic Particles / Clusters II

MA 42.11: Vortrag

Donnerstag, 12. März 2026, 12:15–12:30, HSZ/0004

Strain control of three-dimensional magnetic nanostructures — •José Claudio Corsaletti Filho, Mohammad Sedghi, Elina Zhakina, Markus König, Elena Gati, and Claire Donnelly — Max Planck Institute for Chemical Physics of Solids, Dresden, Germany

The study of nanoscale objects in three-dimensions has led to new discoveries and opportunities for technological development. Recent studies have shown that the magnetic landscape of 3D nanostructures can be controlled by geometrical effects, enabling innovations in design and magneto-mechanical devices. Consequently, a method to reversibly tune the properties of a three-dimensional nanostructure is highly desirable. Strain represents a particularly promising approach, as it directly influences the geometry. Indeed, while strain has been extensively applied to magnetic thin films for the tuning of global material properties, there the substrate restricts global strains to 0.7-1%. In this work, we describe how we strained 3D magnetic nanostructures and map out their geometrical changes through in situ electron microscopy. We are able to achieve ultimate strains of up to 20%, but we also identify regimes associated with the elastic and plastic deformations of 3D nanostructures with different geometries. By determining the mechanical properties of the nanowires, we obtain the fundamental insight to achieving reversible tuning of the geometry - and therefore the magnetic properties - of 3D nanostructures. Such reversible tuning will be of key interest for future technological applications.

Keywords: three-dimensional nanostructure; strain; nanomagnetism