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An improved dielectric resonator method for surface impedance measurement of high-T/sub c/ superconductors

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2 Author(s)
Y. Kobayashi ; Dept. of Electr. Eng., Saitama Univ., Japan ; H. Kayano

An improved dielectric resonator method is proposed to measure the temperature characteristics of the surface impedance Z/sub s/ of superconductors automatically and with high resolution and good reproducibility. A perturbation formula for this resonator is derived to determine Z/sub s/ from measured values of resonant frequency and unloaded Q. Some measured results verified the usefulness of this method. A consideration of the effect of surface roughness was used to compare measured temperature dependence of the complex conductivity with the BCS model and three-fluid models.<>

Published in:

Microwave Symposium Digest, 1992., IEEE MTT-S International

Date of Conference:

1-5 June 1992