Interfacial perpendicular magnetic anisotropy and damping parameter in ultra thin Co{sub 2}FeAl films
- Department of Physics, University of Virginia, Charlottesville, Virginia 22904 (United States)
- Department of Physics and Astronomy, MINT Center, University of Alabama, Tuscaloosa, Alabama 35487 (United States)
- Department of Materials Science and Engineering, University of Virginia, Charlottesville, Virginia 22904 (United States)
B2-ordered Co{sub 2}FeAl films were synthesized using an ion beam deposition tool. A high degree of chemical ordering {approx}81.2% with a low damping parameter ({alpha}) less than 0.004 was obtained in a 50 nm thick film via rapid thermal annealing at 600 Degree-Sign C. The perpendicular magnetic anisotropy (PMA) was optimized in ultra thin Co{sub 2}FeAl films annealed at 350 Degree-Sign C without an external magnetic field. The reduced thickness and annealing temperature to achieve PMA introduced extrinsic factors thus increasing {alpha} significantly. However, the observed damping of Co{sub 2}FeAl films was still lower than that of Co{sub 60}Fe{sub 20}B{sub 20} films prepared at the same thickness and annealing temperature.
- OSTI ID:
- 22162858
- Journal Information:
- Applied Physics Letters, Vol. 102, Issue 16; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
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