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

Abstract

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]
  1. Institute of Physics – Center for Science and Education, Silesian University of Technology, 44-100 Gliwice (Poland)
  2. Karlsruhe Nano Micro Facility (KNMF), Karlsruhe Institute of Technology (KIT), 76344 Eggenstein-Leopoldshafen (Germany)
  3. ACCESS e. V., 57072 Aachen (Germany)
Publication Date:
OSTI Identifier:
22402977
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 117; Journal Issue: 17; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0021-8979
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

Citation Formats

Ehrmann, A., E-mail: andrea.ehrmann@fh-bielefeld.de, Blachowicz, T., Komraus, S., Nees, M. -K., Jakobs, P. -J., Leiste, H., Mathes, M., and Schaarschmidt, M. Magnetic properties of square Py nanowires: Irradiation dose and geometry dependence. United States: N. p., 2015. Web. doi:10.1063/1.4919839.
Ehrmann, A., E-mail: andrea.ehrmann@fh-bielefeld.de, Blachowicz, T., Komraus, S., Nees, M. -K., Jakobs, P. -J., Leiste, H., Mathes, M., & Schaarschmidt, M. Magnetic properties of square Py nanowires: Irradiation dose and geometry dependence. United States. https://doi.org/10.1063/1.4919839
Ehrmann, A., E-mail: andrea.ehrmann@fh-bielefeld.de, Blachowicz, T., Komraus, S., Nees, M. -K., Jakobs, P. -J., Leiste, H., Mathes, M., and Schaarschmidt, M. 2015. "Magnetic properties of square Py nanowires: Irradiation dose and geometry dependence". United States. https://doi.org/10.1063/1.4919839.
@article{osti_22402977,
title = {Magnetic properties of square Py nanowires: Irradiation dose and geometry dependence},
author = {Ehrmann, A., E-mail: andrea.ehrmann@fh-bielefeld.de and Blachowicz, T. and Komraus, S. and Nees, M. -K. and Jakobs, P. -J. and Leiste, H. and Mathes, M. and Schaarschmidt, M.},
abstractNote = {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.},
doi = {10.1063/1.4919839},
url = {https://www.osti.gov/biblio/22402977}, journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 17,
volume = 117,
place = {United States},
year = {Thu May 07 00:00:00 EDT 2015},
month = {Thu May 07 00:00:00 EDT 2015}
}