Compositional dependence of magnetic and high frequency properties of nanogranular CoFe-Yttrium-doped Zirconia films

Soft magnetic nanogranular CoFe-Yttrium-doped Zirconia (CoFe-YSZ) thin films were prepared by co-sputtering YSZ with different compositions of CoFe. And the characteristics of the electromagnetic noise suppression have been evaluated using an integrated coplanar waveguide (CPW) transmission line. The absorption attenuation amplitude reaches to −8.1 dB at the resonance frequency fr = 3.5 GHz. In addition, the transmission signal attenuation decreases sharply at the resonance frequency and almost keeps constant when the frequency is lower than 1.2 GHz.222