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Title: Magnetic properties on the surface of FeAl stripes induced by nanosecond pulsed laser irradiation

We demonstrate the formation of magnetic nanostripes on the surface of Fe{sub 52}Al{sub 48} induced by nanosecond pulsed laser irradiation and investigate their magnetic properties. The magnetic stripe consists of a disordered A2 phase of Fe-Al alloys with Al-oxide along the [110] direction on the (111)-oriented plane. According to the focused magneto-optical Kerr effect measurement, the coercive force of the magnetic stripe obeys the 1/cos θ law, where θ is the field rotation angle estimated from the stripe direction. Also, the jump field can be observed in the magnetic hysteresis loop. These results indicate that the magnetization reversal in the magnetic stripe originates from the domain pinning, showing that the magnetization rotates incoherently.
Authors:
; ;  [1] ;  [2] ;  [3] ;  [2] ;  [4]
  1. Laboratory of Nano-Structure Physics, Research Institute for Electronic Science, Hokkaido University, Sapporo, Hokkaido 001-0020 (Japan)
  2. Center for Advanced Research of Energy and Materials, Faculty of Engineering, Hokkaido University, Sapporo, Hokkaido 060-8628 (Japan)
  3. (Japan)
  4. Graduate School of Engineering, Tohoku University, Sendai, Miyagi 980-8579 (Japan)
Publication Date:
OSTI Identifier:
22273905
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 115; Journal Issue: 17; Conference: 55. annual conference on magnetism and magnetic materials, Atlanta, GA (United States), 14-18 Nov 2010; Other Information: (c) 2014 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; ALUMINIUM; ALUMINIUM OXIDES; COERCIVE FORCE; CRYSTAL STRUCTURE; DOMAIN STRUCTURE; HYSTERESIS; IRON; KERR EFFECT; LASER RADIATION; MAGNETIC PROPERTIES; MAGNETIZATION; ROTATION; SURFACES