Experimental and Theoretical Study of Curvature Effects in Parabolic Nanostripes. Issue 1 (3rd August 2018)

• Record Type: Journal Article
• Authors: Volkov, Oleksii M.; Kronast, Florian; Mönch, Ingolf; Mawass, Mohamad‐Assaad; Kákay, Attila; Fassbender, Jürgen; Makarov, Denys
• Other Names: Fomin Vladimir M. guestEditor.
• Is Part Of: Physica status solidi. Volume 13:Issue 1(2019)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2018-08-03
• Subjects: curvature -- curvilinear magnetism -- magnetic nanostripes -- magnetic nanowires; Solid state physics -- Periodicals; 530.4105
• DOI: 10.1002/pssr.201800309
• Languages: English
• ISSNs: 1862-6254

Abstract

Abstract : Curvature effects in magnetism offer appealing possibilities to obtain new magnetic textures at the nanoscale due to the interplay between exchange and magnetostatic interactions. Experimentally and theoretically, curvature‐driven changes of static magnetic properties in parabolic nanostripes have been addressed here. The shape of a parabolic stripe is tuned to cover broad range of widths and curvatures allowing to construct a phase diagram of magnetic equilibrium states. For this, joint experimental, i.e., soft X‐ray imaging, and theoretical studies are carried out. Analytical calculations in the framework, when non‐local magnetostatic effects are neglected, coincide with the experimental and simulation results in a broad range of parameters. The results give confidence in the applicability of the existing theoretical framework for further analytical considerations of equilibrium magnetization states of curvilinear nanomagnets. Abstract : At present, the theory of curvilinear nanomagnetism neglects non‐local magnetostatic effects. Experimentally and theoretically, curvature‐induced effects in parabolic nanostripes have been addressed here. Phase diagrams of equilibrium magnetic states for parabolas with different geometrical parameters have been established. The comparison of experimental and theoretical data allows to identify analytically the geometrical limitations of the presently used theory with local magnetostatics.