Microwave Characterization of High T c Superconducting YBaCuO Thin Films and Preliminary Device Realization

High T c superconducting thin films have been realized on MgO and LaAIO 3 by laser ablation and sputtering. Their critical temperature are close to 90K. Their microwave properties have been tested on the one hand by the measurement of the complex conductivity (between 18 and 26 GHz) and on the other hand by realizing planar microstrip resonators.