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Title: Magnetic and Gilbert damping properties of L{sub 21}-Co{sub 2}FeAl film grown by molecular beam epitaxy

Co{sub 2}FeAl film with L{sub 21} structure was prepared. Its magnetic and Gilbert damping properties were studied by ferromagnetic resonance (FMR) and time-resolved magneto-optical Kerr effect (TR-MOKE), respectively. It is observed that the apparent damping parameter decreases drastically with increasing magnetic field at low field regime and eventually becomes a constant value of 0.004 at high field regime by TR-MOKE measurements. A Gilbert damping parameter of 0.008 in the hard axis by FMR measurement has also been obtained, which is comparable with that extracted from TR-MOKE measurements at low external field, indicating the extrinsic damping processes involved in the low field regime.
Authors:
; ; ;  [1] ; ;  [2]
  1. State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, P.O. Box 912, Beijing 100083 (China)
  2. State Key Laboratory of Surface Physics, Department of Physics and Advanced Materials Laboratory, Fudan University, Shanghai 200433 (China)
Publication Date:
OSTI Identifier:
22217930
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 103; Journal Issue: 15; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ALUMINIUM ALLOYS; COBALT ALLOYS; DAMPING; FERROMAGNETIC RESONANCE; IRON ALLOYS; KERR EFFECT; MAGNETIC FIELDS; MAGNETO-OPTICAL EFFECTS; MOLECULAR BEAM EPITAXY; SPECTRA; THIN FILMS; TIME RESOLUTION