Energetics of domain wall in magnetic nanowire

O. S. Trushin; E. Granato; S. C. Ying

doi:10.1117/12.2521401

15 March 2019 Energetics of domain wall in magnetic nanowire

O. S. Trushin, E. Granato, S. C. Ying

Proceedings Volume 11022, International Conference on Micro- and Nano-Electronics 2018; 110221L (2019) https://doi.org/10.1117/12.2521401
Event: The International Conference on Micro- and Nano-Electronics 2018, 2018, Zvenigorod, Russian Federation

Abstract

Micromagnetic modeling is used to study the energetics of magnetic switching of single-layer permalloy nanowire. The energy landscape of the system is studied using Nudged Elastic Band method. Using different initial guess trajectories for NEB minimization several alternative minimal energy transition paths were found corresponding to possible scenarios of magnetic switching of the nanowire through nucleation and propagation of transverse domain walls. Dependence of energy barrier for DW nucleation on lateral sizes of the nanowire has been studied. Besides that, the effect of additional constant external bias magnetic fields (longitudinal and transverse) on nanowire switching has been explored. It has been shown that presence of rectangular shape notch on the nanowire long side leads to the appearance of local minimum on the energy profile. Thus artificially created notches can be used for DW pinning.

Citation Download Citation

O. S. Trushin, E. Granato, and S. C. Ying "Energetics of domain wall in magnetic nanowire", Proc. SPIE 11022, International Conference on Micro- and Nano-Electronics 2018, 110221L (15 March 2019); https://doi.org/10.1117/12.2521401

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