Title :
Tuning of the Microwave Magnetization Dynamics in Dy-Doped Fe65Co35-Based Thin Films
Author :
Feng Xu ; Zhan Xu ; Yuan Yin
Author_Institution :
Sch. of Mater. Sci. & Eng., Nanjing Univ. of Sci. & Technol., Nanjing, China
Abstract :
To enhance the damping of microwave magnetization dynamics, we investigate the effect of Dy-doping into Fe65Co35 thin films. The increase of Dy-doping reduces the saturation magnetization substantially. The coercivities decrease largely after Dy-doping, ascribed to the grain refinement. The damping factor increases as expected due to the enhanced orbital-spin coupling by Dy-doping. Other than the high Dy-concentration, the tuning by sputtering gas pressure is also effective in enhancing the damping, avoiding the remarkable decrease of resonance frequency.
Keywords :
cobalt alloys; coercive force; damping; doping profiles; dysprosium alloys; grain refinement; iron alloys; magnetic thin films; metallic thin films; spin-orbit interactions; sputter deposition; (Fe65Co35)100-xDyx; coercivity; damping; doping effect; dysprosium doped iron cobalt-based thin films; grain refinement; microwave magnetization dynamics; orbital-spin coupling; resonance frequency; saturation magnetization; sputtering gas pressure; Coercive force; Damping; Films; Magnetic properties; Magnetization; Permeability; Sputtering; Damping; FeCo; Magnetization dynamics; damping; magnetization dynamics; thin film;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2015.2436053
