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Mobility of magnetic helicoid in holmium nano-layer
R.S. Zavornitsyn,L.I. Naumova,M.A. Milyaev,M.V. Makarova,V.V. Proglyado,I.K. Maksimova,V.V. Ustinov 한국물리학회 2020 Current Applied Physics Vol.20 No.12
Spin valves with holmium layers and three-layer structures metal/Ho/metal were prepared by magnetron sputtering. A holmium layer in the spin valves is polycrystalline with weak axial <002> texture. The structural coherence length along the hexagonal c-axis is approximately 2/5 of the total thickness of the holmium layer. Field dependences of the spin valves magnetoresistance were measured at different temperatures. Correlation was revealed between magnetic state in holmium layer and the shape of magnetoresistive curve. Deviation of magnetic moments of the reference layer and the adjacent part of holmium from the applied magnetic field was investigated. The field induced mobility of the magnetic helicoid in holmium layers was revealed.