HIGH-FREQUENCY SUPERCONDUCTING PROPERTIES OF THE NdBa2Cu3O6+x SYSTEM

Abstract

The high-frequency behavior of superconducting NdBa 2 Cu 3 O 6+x (NBCO) has been investigated by the standing-wave technique in the microwave region. The joule loss of the bulk NBCO sample, as determined from the voltage standing wave ratio (VSWR), falls markedly at Tc. In the low temperature region, i.e. for T<Tc it tends towards the formula, A=18.5 exp (-0.052 eV/kT).