Title :
Radio frequency applications of carbon nanotube coated Permalloy nanorod array
Author :
Kim, Ki Hyeon ; Fukushima, Tadahiro ; Yamaguchi, Masahiro ; Orikasa, Hironori ; Kyotani, Takashi
Author_Institution :
Dept. of Electr. & Commun. Eng., Tohoku Univ., Japan
Abstract :
The RF characteristics of carbon nanotube coated Permalloy nanorod array in porous anodic aluminum oxide were evaluated using coplanar waveguide. The average diameter and length of the Permalloy nanorods was ∼ 10 nm and ∼ 500 nm, respectively. The signal attenuation of the Permalloy nanorod array was 22.4 dB/cm at 20 GHz (stop-band frequency), which was higher than that of 0.5 μm-thick NiZn-ferrite film (15.5 dB/cm). In the pass band frequency region at around 1 GHz, the magnitude of signal attenuation of the Permalloy nanorods array exhibited about 0.5 dB/cm. It is lower than that of the NiZn-ferrite film of 1.2 dB/cm. The propagation wavelength shortening was obtained by NiZn ferrite (60 %) and carbon coated Permalloy nanorod (46.2 %) at 1 GHz.
Keywords :
Permalloy; anodisation; carbon nanotubes; coplanar waveguides; microwave materials; nanostructured materials; nickel alloys; porous materials; zinc alloys; 0.5 micron; 20 GHz; NiZn; NiZn-ferrite film; carbon nanotube coated Permalloy nanorod array; coplanar waveguide; pass band frequency; porous anodic aluminum oxide; propagation wavelength shortening; signal attenuation magnitude; stop-band frequency; Aluminum oxide; Attenuation; Carbon nanotubes; Coplanar waveguides; Ferrite films; Radio frequency;
Conference_Titel :
Microwave Conference Proceedings, 2005. APMC 2005. Asia-Pacific Conference Proceedings
Print_ISBN :
0-7803-9433-X
DOI :
10.1109/APMC.2005.1606544
