0_7482 Magnetic curvilinear effects are gaining attention for its potential in stretchable and magnetoelectric devices, microrobots, sensors, flexible magnetic memories and nanoelectronics [1-5].
These phenomena encompass a vast range of exchange- and Dzyaloshinskii-Moriya (DMI) - induced interactions that typically result in topological magnetization patterns, chiral symmetry breaking, and pinning of domain walls [1-6]. However, the role of the curvilinear effects in the magnetization dynamics of domain walls in curved geometries has received less attention [4, 7-8]. In this study, we provide first results in single 100 nm-wide thin periodically corrugated strips of CrOx/Co/Pt with thickness of 2 nm and largest curvature of 0.06 nm-1, tailored with enhanced DMI-induced effects. The orientation of the corrugation is tuned from the parallel to the perpendicular direction of the strip axis in different strips.
Our results show that curvature plays a critical role in both, the pinning and tilting of domain walls, particularly in the Dzyaloshinskii-Moriya-induced anisotropy and its combination with exchange-induced effects. Our findings offer new possibilities for designing curvature-induced effects for nanoelectronics. [9].
References
[1] D. Makarov, et al., Advanced Materials 34, 3 (2022)
[2] D. Sheka, Oleksandr V Pylypovskyi et al., Small 18, 12 (2022)
[3] D. Sander et al., J. Phys. D: Appl. Phys. 50, 363001 (2017).
[4] E. Y. Vedmedenko, et al., J. Phys. D. Appl. Phys. 53, 453001 (2020).
[5] D. Makarov et al., Applied Physics Reviews 3, 011101 (2016).
[6] E. Berganza et al., Sci Rep 12, 3426 (2022)
[7] O. V. Pylypovskyi et al., Scientific Reports 6, 23316 (2016).
[8] O. M. Volkov et al., Phys. Rev. Applied 15, 034038 (2021)
[9] B. Dieny, et al., Nat Electron 3, 446 (2020).