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

Journal Article · Thu May 07 00:00:00 EDT 2015 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4919839· OSTI ID:22402977

Blachowicz, T.; Komraus, S. ^[1]; Nees, M. -K.; Jakobs, P. -J.; Leiste, H. ^[2]; Mathes, M.; Schaarschmidt, M. ^[3]

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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)

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.

• OSTI ID: 22402977
• Journal Information: Journal of Applied Physics, Vol. 117, Issue 17; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

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