The Ni nanotubes with 400 nm of diameter, 2.4 m of length and 60 nm of thickness were fabricated by electrodeposition using porous polycarbonate template. The ferromagnetic resonance (FMR) signals… Click to show full abstract
The Ni nanotubes with 400 nm of diameter, 2.4 m of length and 60 nm of thickness were fabricated by electrodeposition using porous polycarbonate template. The ferromagnetic resonance (FMR) signals were measured in parallel (H z ) and perpendicular (H x ) direction to length of Ni nanotubes, respectively. These two FMR siginals showed totally different behaviors. The FMR signals measured in H z showed single resonance behavior and it was explained by bar shape. While, the FMR signals measured in H x showed double resonance behavior, which was due to the shape anisotropy of ring type.
               
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