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Title: The in-plane anisotropic magnetic damping of ultrathin epitaxial Co{sub 2}FeAl film

The in-plane orientation-dependent effective damping of ultrathin Co{sub 2}FeAl film epitaxially grown on GaAs(001) substrate by molecular beam epitaxy (MBE) has been investigated by employing the time-resolved magneto-optical Kerr effect (TR-MOKE) measurements. It is found that the interface-induced uniaxial anisotropy is favorable for precession response and the anisotropy of precession frequency is mainly determined by this uniaxial anisotropy, while the magnetic relaxation time and damping factor exhibit the fourfold anisotropy at high-field regime. The field-independent anisotropic damping factor obtained at high fields indicates that the effective damping shows an intrinsic fourfold anisotropy for the epitaxial Co{sub 2}FeAl thin films.
Authors:
 [1] ;  [2] ; ; ; ;  [1]
  1. State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, P.O. Box 912, Beijing 100083 (China)
  2. (China)
Publication Date:
OSTI Identifier:
22492326
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Advances; Journal Volume: 5; Journal Issue: 8; Other Information: (c) 2015 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ALUMINIUM ALLOYS; ANISOTROPY; COBALT BASE ALLOYS; CRYSTAL STRUCTURE; DAMPING; GALLIUM ARSENIDES; INTERFACES; IRON ALLOYS; KERR EFFECT; MAGNETO-OPTICAL EFFECTS; MOLECULAR BEAM EPITAXY; ORIENTATION; PRECESSION; RELAXATION TIME; SUBSTRATES; THIN FILMS; TIME RESOLUTION