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Domain Wall Motion in Magnetic Nanostrips

2020/04/08 by Oscar Alejos, Víctor Raposo, Eduardo Martínez
Materials Science · Physics and Astronomy · #Carbon Nanotubes in Composites #Chemical and Physical Properties of Materials #Coupling (piping) #Domain wall (magnetism) #Ferrimagnetism #Ferromagnetism #Magnetic domain #Magnetic properties of thin films #Micromagnetics #Motion (physics) #Perpendicular #Spintronics #cond-mat.mes-hall

paper · pdf · doi:10.1002/9783527603978.mst0459

published as Materials Science and Technology. 2020. Wiley-VCH Verlag GmbH & Co. KGaA · Updated and corrected Fig 29 indicates that adjacent DWs in HM/FiM at T=TA are efficiently driven by preserving their relative distance even when passing along curved parts. This also replaces Fig. 8 in "Current-driven domain wall dynamics in ferrimagnets: Micromagnetic approach and collective coordinates model". E Martinez at al. JMMM 491 (2019)

openalex publication_date 2020/04/08 · openalex created_date 2020/04/17 · arxiv created 2021/05/18 · arxiv updated 2021/05/19 · openalex updated_date 2026/08/05

Abstract

Abstract Domain walls (DWs) are the transition regions between two magnetic domains. These objects have been very relevant during the last decade, not only due to their intrinsic interest in the development of novel spintronic devices but also because of their fundamental interest. The study of DW has been linked to the research on novel spin–orbit coupling phenomena, such as the Dzyaloshinskii–Moriya interaction and the spin Hall effect. DWs can be nucleated in ferromagnetic (FM) nanostrips and can be driven by conventional magnetic fields and spin currents due to the injection of electrical pulses, which make them very promising for technological applications of recording and logic devices. In this article, based on full micromagnetic simulations supported by extended one‐dimensional models, we describe the static and dynamic properties of DWs in thin FM and ferrimagnetic wires with perpendicular magnetic anisotropy. This article aims to provide a fundamental theoretical description of the fundaments of DWs, and the numerical tools and models that allow describing the DW dynamics in previous and future experimental setups.

Citations