Tuning of the microwave magnetization dynamics in CoZr-based thin films by Nd-doping

Journal Article · Thu May 07 00:00:00 EDT 2015 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4919267· OSTI ID:22403030

Xu, Zhan; Yin, Yuan; Xu, Feng ^[1]; Xu, Qingyu ^[2]; Wang, Dunhui ^[3]; Li, Shandong ^[4]

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1. School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094 (China)
2. Physics Department, Southeast Univerisity, Nanjing 211189 (China)
3. School of Physics, Nanjing University, Nanjing 210093 (China)
4. College of Physics, Qingdao University, Qingdao 266071 (China)

To enhance the damping of microwave magnetization dynamics, we investigate the effect of Nd-doping (0–3.0 at. %) into CoZr thin films. The saturation magnetization decreases with Nd-doping. The coercivities generally decrease in the case of 1.5 at. % Nd-doping, while increase in the case of 3.0 at. % Nd-doping. The magnetization dynamics is characterized with the permeability spectra, which are determined by the ferromagnetic resonance behavior at the microwave range. The permeability spectra are analyzed through the fittings with Landau-Lifshitz-Gilbert equation. From the fittings, both the dynamic magnetic anisotropy field and the damping factor increase, due to the enhanced spin-orbital coupling by Nd-doping.

• OSTI ID: 22403030
• Journal Information: Journal of Applied Physics, Vol. 117, Issue 17; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ANISOTROPY
COBALT
COBALT BASE ALLOYS
COERCIVE FORCE
CONCENTRATION RATIO
DAMPING
DIFFERENTIAL EQUATIONS
FERROMAGNETIC RESONANCE
L-S COUPLING
MAGNETIZATION
MICROWAVE RADIATION
NEODYMIUM ADDITIONS
PERMEABILITY
THIN FILMS
ZIRCONIUM BASE ALLOYS