2014/12/01 by L. V. Dzemiantsova, Dzemiantsova, L. V., G. Meier +5
Physics and Astronomy · #FOS: Physical sciences #Magnetic properties of thin films #Materials Science (cond-mat.mtrl-sci) #Physics of Superconductivity and Magnetism #Theoretical and Computational Physics #cond-mat.mtrl-sci
paper · pdf · doi:10.48550/arxiv.1412.1379
4 pages, 3 figures
arxiv created 2014/12/01 · openalex publication_date 2014/12/01 · arxiv updated 2014/12/04 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Based on micromagnetic simulations, we report on a novel helical magnetic structure in a soft magnetic film that is sandwiched between and exchange-coupled to two hard magnetic layers. Confined between antiparallel hard magnetic moments, a helix with a turn of 180∘ is stable without the presence of an external magnetic field. The magnetic stability is determined by the energy minimization and is a result of an internal field created by exchange interaction and anisotropy. Since the internal field stores magnetic energy, the helix can serve as an energy-storing element in spin-based nanodevices. Due to the significantly different magnetic resonance frequencies, the ferromagnetic and helical ground states are easy to distinguish in a broadband ferromagnetic resonance experiment.