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RF noise suppression using carbon-coated permalloy nanorod arrays

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4 Author(s)
Ki Hyeon Kim ; Dept. of Electr. & Commun. Eng., Tohoku Univ., Japan ; Orikasa, H. ; Kyotani, T. ; Yamaguchi, M.

We evaluated the noise suppression effects of carbon coated permalloy nanorod arrays in porous anodic aluminum oxide on coplanar waveguide. The average diameter and length of the Permalloy nanorods was ∼500 nm and ∼10 nm, respectively. The power loss of the Permalloy nanorods was 85% at 20 GHz (in stop-band frequency) which was higher than that of 0.5-μm-thick NiZn-ferrite film (68%). In the pass band frequency region at around 1 GHz, the signal attenuation of the Permalloy nanorod arrays was lower than that of the NiZn-ferrite film.

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Magnetics, IEEE Transactions on  (Volume:41 ,  Issue: 10 )