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Title: Magnetic damping and spin polarization of highly ordered B2 Co{sub 2}FeAl thin films

Epitaxial Co{sub 2}FeAl films were synthesized using the Biased Target Ion Beam Deposition technique. Post annealing yielded Co{sub 2}FeAl films with an improved B2 chemical ordering. Both the magnetization and the Gilbert damping parameter were reduced with increased B2 ordering. A low damping parameter, ∼0.002, was attained in B2 ordered Co{sub 2}FeAl films without the presence of the L2{sub 1} Heusler phase, which suggests that the B2 structure is sufficient for providing low damping in Co{sub 2}FeAl. The spin polarization was ∼53% and was insensitive to the chemical ordering.
Authors:
 [1] ;  [2] ; ; ;  [3] ;  [4] ;  [1] ;  [5]
  1. Department of Physics, University of Virginia, Charlottesville, Virginia 22904 (United States)
  2. Department of Materials Science and Engineering, University of Virginia, Charlottesville, Virginia 22904 (United States)
  3. Department of Physics and Astronomy, University of Alabama, Tuscaloosa, Alabama 35487 (United States)
  4. Naval Research Laboratory, Washington, DC 20375 (United States)
  5. (United States)
Publication Date:
OSTI Identifier:
22314301
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 116; Journal Issue: 7; 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; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ANNEALING; DAMPING; DEPOSITION; EPITAXY; ION BEAMS; MAGNETIZATION; SPIN ORIENTATION; THIN FILMS; YIELDS