Title :
Nanogranular CoFe-yttrium-doped zirconia films for noise suppressor
Author :
Hao, G. ; Zhang, D. ; Jin, L. ; Zhang, H. ; Tang, X.
Author_Institution :
Univ. of Electron. Sci. & Technol., Chengdu, China
Abstract :
Magnetic nanogranular CoFe-yttrium-doped zirconia (FeCo-YSZ) films have been deposited by radio frequency magnetron cosputtering . By simply adjusting the thickness of films, the imaginary permeability spectrum of FeCo-YSZ films changed from a resonance-type permeability spectra to a relaxation-type permeability spectra . Based on this phenomenon, Nanogranular CoFe-YSZ films with various thicknesses were deposited and the characteristics of the electromagnetic noise suppression have been evaluated using an integrated coplanar waveguide transmission line . The CoFeYSZ film of 821nm shows a very wide resonance peak with the full-width at half-maximum of 2 .8 GHz . The absorption attenuation amplitude reaches to -8 .3 dB at the resonance frequency, and is better than -6 .2 dB for the frequency above 3 .5 GHz .
Keywords :
cobalt alloys; iron alloys; magnetic noise; magnetic permeability; magnetic thin films; nanomagnetics; sputter deposition; yttrium compounds; zirconium compounds; CoFe-ZrO2:Y; film thickness; imaginary permeability spectrum; integrated coplanar waveguide transmission line; magnetic nanogranular films; noise suppressor; radio frequency magnetron cosputtering; relaxation type permeability spectra; resonance type permeability spectra; Coplanar waveguides; Magnetic films; Magnetic resonance imaging; Noise; Permeability; Resonant frequency;
Conference_Titel :
Magnetics Conference (INTERMAG), 2015 IEEE
Conference_Location :
Beijing
Print_ISBN :
978-1-4799-7321-7
DOI :
10.1109/INTMAG.2015.7157713
