Abstract
Ferromagnetic Resonance Behaviors of Integrated CoPdAlO Magnetic Film on Coplanar Waveguide Ki Hyeon Kim Department of Physics, Yeungnam University, Gyeongsan 712-749 Masahiro Yamaguchi Department of Electrical and Communication Engineering, Tohoku University, Sendai 980-8579, Japan Jongryoul Kim Department of Metallurgy and Materials Science, Hanyang University, Ansan 425-791 (Received 30 August 2007) CoPdAlO magnetic lms, whose ferromagnetic resonance (FMR) frequency was 4.2 GHz, were deposited on a coplanar waveguide (CPW) by using a RF magnetron sputtering method and were then patterned with a size of 2000 m 50 m 2 m (l w t). In the case of the patterned magnetic lms on CPW, the calculated and the measured FMR frequencies were shifted to around 7 GHz, and the measured characteristic impedance of the CPW was also changed by around 7 GHz. In addition, the propagation wavelength shortening e ect was enhanced by about 17 % up to 7 GHz compared with that of the CPW without magnetic lm. These results show that patterned magnetic lms can be used as band-pass lters and broad-band EMI noise lters in the RF and the microwave regions. PACS numbers: 75.90.+w, 85.70.k, 07.55.-w
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