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Title: Investigation of the temperature-dependence of ferromagnetic resonance and spin waves in Co{sub 2}FeAl{sub 0.5}Si{sub 0.5}

Co{sub 2}FeAl{sub 0.5}Si{sub 0.5} (CFAS) is a Heusler compound that is of interest for spintronics applications, due to its high spin polarization and relatively low Gilbert damping constant. In this study, the behavior of ferromagnetic resonance as a function of temperature was investigated in CFAS, yielding a decreasing trend of damping constant as the temperature was increased from 13 to 300 K. Furthermore, we studied spin waves in CFAS using both frequency domain and time domain techniques, obtaining group velocities and attenuation lengths as high as 26 km/s and 23.3 μm, respectively, at room temperature.
Authors:
; ; ;  [1] ;  [2] ;  [3]
  1. Department of Electrical and Computer Engineering, National University of Singapore, 117576 Singapore (Singapore)
  2. Department of Physics, The University of York, York YO10 5DD (United Kingdom)
  3. Department of Electronics, The University of York, York YO10 5DD (United Kingdom)
Publication Date:
OSTI Identifier:
22299994
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 104; Journal Issue: 23; 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 COMPOUNDS; COBALT COMPOUNDS; FERROMAGNETIC RESONANCE; HEUSLER ALLOYS; IRON COMPOUNDS; SILICON COMPOUNDS; SPIN ORIENTATION; SPIN WAVES; TEMPERATURE DEPENDENCE; TEMPERATURE RANGE 0273-0400 K