Ak. Gupta et al., CORRELATION BETWEEN MICROWAVE SURFACE-RESISTANCE AND DENSITY OF YBCO CERAMIC SUPERCONDUCTOR, Physica. C, Superconductivity, 235, 1994, pp. 2005-2006
We report results of measurement on microwave surface resistance (R(s)
) of YB2Cu3O7-x(YBCO) ceramic samples of different density as a functi
on of temperature, frequency, rf and dc magnetic field.