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RF Characterizations of Patterned CoNbZr Magnetic Thin Film on Transmission Line
Journal of Magnetics, Volume 11, Number 3, 30 Sep 2006, Pages 130-134
Abstract
The microwave power absorption for the patterned CoNbZr magnetic film has been investigated by coplanar waveguide method. The power absorption peaks of the patterned CoNbZr film (50 µm× 2 mm × 2 µm),were observed at around 5.7 GHz. The observed resonance peak was in good agreement with calculated ferromagnetic resonance frequency including magnetic shape anisotropy effects. Compared with the coplanar waveguide without a magnetic film, the characteristic impedance of patterned film was shown to be increased. This resulted from the large increment of inductance up to 33 % without any significant changes of the capacitance.
Keywords: ferromagnetic resonance; patterned magnetic film; coplanar waveguide; propagation constant; noise suppression; wavelength shortening; scattering parameter; relative permeability
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