Tunable High-Frequency Properties of Co-Ni Ferromagnetic Nanowires Through Composition Modulation

High-frequency properties of Co-Ni ferromagnetic nanowires with different compositions were investigated in this paper. Co-Ni nanowires including Ni, Co 38 Ni 62 , Co 50 Ni 50 , Co 72 Ni 28 , and Co were synthesized in anodic aluminum oxide templates by electrodeposition. The ferromagnetic resonance...

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Bibliographic Details
Published in:IEEE transactions on magnetics 2015-11, Vol.51 (11), p.1-6
Main Authors: Lei, Yuxiong, Li, Liangliang, Yuan, Lixin, Yue, Zhenxing
Format: Article
Language:English
Subjects:
Aluminum oxide
Cobalt
Composition modulation
Ferromagnetic resonance
Ferromagnetism
Frequency modulation
High-frequency materials
Magnetic fields
Magnetic resonance
Magnetism
Microwave filters
Microwave properties
Modulation
Nanowires
Networks
Nickel
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Summary:High-frequency properties of Co-Ni ferromagnetic nanowires with different compositions were investigated in this paper. Co-Ni nanowires including Ni, Co 38 Ni 62 , Co 50 Ni 50 , Co 72 Ni 28 , and Co were synthesized in anodic aluminum oxide templates by electrodeposition. The ferromagnetic resonance (FMR) frequency of nanowires was measured by a vector network analyzer with a coplanar waveguide line. Without an external magnetic field, the FMR frequency of the Co-Ni nanowires monotonically increased from 11.0 to 21.5 GHz when the Co content increased from 0 to 100 at.%. With an applied magnetic field of 9.0 kOe, the FMR frequency also linearly rose from 30.0 to 37.5 GHz with increasing the Co content. The experimental data showed that the high-frequency properties of Co-Ni nanowires were linearly tuned through composition modulation, which provided a feasible approach to adjust the working frequency of radio frequency or microwave micro-devices without the assistance of an external magnetic field.
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.2015.2440371