TY - JOUR
T1 - Microwave characteristics of YBaCuO coplanar waveguide resonators fabricated by the sol-gel process on polycrystalline MgO
AU - Kanaya, Haruichi
AU - Kaneyuki, Tomohiko
AU - Senoh, Hidehiro
AU - Cho, Yasuo
AU - Awai, Ikuo
PY - 1997/1/1
Y1 - 1997/1/1
N2 - High temperature superconducting (HTS) Y-Ba-Cu-O (YBCO) films were prepared on MgO polycrystal substrates by the sol-gel process. The resistivity at DC and the surface resistance (Rs) at a microwave frequency of the films were measured. Rs was found to be highly dependent on the thickness of the films and the temperature, and the optimal value obtained for Rs was 4.2 mΩ at 40 K and 10 GHz. We also fabricated a YBCO coplanar waveguide (CPW) half-wavelength resonator around 2 GHz and compared its RF property with that of a normal metal. The incident power dependence of the transmission characteristics was observed to examine the power handling capability of the HTS resonator. As the temperature and the input power decreased, the quality factor (Q0) of the YBCO CPW resonator improved significantly, as opposed to hardly any change of that of a normal metal.
AB - High temperature superconducting (HTS) Y-Ba-Cu-O (YBCO) films were prepared on MgO polycrystal substrates by the sol-gel process. The resistivity at DC and the surface resistance (Rs) at a microwave frequency of the films were measured. Rs was found to be highly dependent on the thickness of the films and the temperature, and the optimal value obtained for Rs was 4.2 mΩ at 40 K and 10 GHz. We also fabricated a YBCO coplanar waveguide (CPW) half-wavelength resonator around 2 GHz and compared its RF property with that of a normal metal. The incident power dependence of the transmission characteristics was observed to examine the power handling capability of the HTS resonator. As the temperature and the input power decreased, the quality factor (Q0) of the YBCO CPW resonator improved significantly, as opposed to hardly any change of that of a normal metal.
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U2 - 10.1143/jjap.36.6311
DO - 10.1143/jjap.36.6311
M3 - Article
AN - SCOPUS:0031250612
SN - 0021-4922
VL - 36
SP - 6311
EP - 6315
JO - Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
JF - Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
IS - 10
ER -