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

Journal Article · Mon Jun 09 00:00:00 EDT 2014 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4883495· OSTI ID:22299994

Loong, Li Ming; Kwon, Jae Hyun; Deorani, Praveen; Yang, Hyunsoo ^[1]; Tung Yu, Chris Nga ^[2]; Hirohata, Atsufumi ^[3]

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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)

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.

• OSTI ID: 22299994
• Journal Information: Applied Physics Letters, Vol. 104, Issue 23; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

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