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Title: Experimental evidence of skyrmion-like configurations in bilayer nanodisks with perpendicular magnetic anisotropy

Formation and existence of magnetic skyrmion-like configurations in bilayer nanodisks (Ta(3 nm)/[Co(0.37 nm)/Ni(0.58 nm)]{sub 10}){sub 2} with perpendicular magnetic anisotropy are shown experimentally at room temperature. Magnetization reversal through the skyrmion state is studied using magnetic hysteresis measurements. An evolution of skyrmion configurations in the nanodisk structure is analyzed. Experimental methods and micromagnetic simulations help to understand the magnetization reversal processes occurring through the stable skyrmion-like configurations. Formation of the intermediate C-states during magnetization reversal is demonstrated. The skyrmion number for all possible spin configurations is calculated.
Authors:
; ; ; ; ;  [1]
  1. Laboratory of Thin Film Technologies, School of Natural Sciences, Far Eastern Federal University, Vladivostok 690950 (Russian Federation)
Publication Date:
OSTI Identifier:
22409966
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 117; Journal Issue: 17; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ANISOTROPY; COBALT; HYSTERESIS; INTERFACES; LAYERS; MAGNETIC MATERIALS; MAGNETISM; MAGNETIZATION; NANOSTRUCTURES; NICKEL; SKYRME POTENTIAL; SOLITONS; SPIN; TANTALUM; TEMPERATURE RANGE 0273-0400 K