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Title: Magnetic properties of square Py nanowires: Irradiation dose and geometry dependence

Arrays of ferromagnetic patterned nanostructures with single particle lateral dimensions between 160 nm and 400 nm were created by electron-beam lithography. The fourfold particles with rectangular-shaped walls around a square open area were produced from permalloy. Their magnetic properties were measured using the longitudinal magneto-optical Kerr effect. The article reports about the angle-dependent coercive fields and the influence of the e-beam radiation dose on sample shapes. It is shown that a broad range of radiation dose intensities enables reliable creation of nanostructures with parameters relevant for the desired magnetization reversal scenario. The experimental results are finally compared with micromagnetic simulations to explain the findings.
Authors:
 [1] ; ;  [2] ; ; ;  [3] ; ;  [4]
  1. Faculty of Engineering Sciences and Mathematics, Bielefeld University of Applied Sciences, 33609 Bielefeld (Germany)
  2. Institute of Physics – Center for Science and Education, Silesian University of Technology, 44-100 Gliwice (Poland)
  3. Karlsruhe Nano Micro Facility (KNMF), Karlsruhe Institute of Technology (KIT), 76344 Eggenstein-Leopoldshafen (Germany)
  4. ACCESS e. V., 57072 Aachen (Germany)
Publication Date:
OSTI Identifier:
22402977
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:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 77 NANOSCIENCE AND NANOTECHNOLOGY; COERCIVE FORCE; COMPARATIVE EVALUATIONS; COMPUTERIZED SIMULATION; ELECTRON BEAMS; FERROMAGNETIC MATERIALS; FERROMAGNETISM; KERR EFFECT; MAGNETIC FIELD REVERSAL; MAGNETIC PROPERTIES; MAGNETIZATION; MAGNETO-OPTICAL EFFECTS; MASKING; NANOWIRES; PARTICLES; PERMALLOY; RADIATION DOSES; SHAPE