R. Torres et al., THE EFFECT OF THE COMPACTION PRESSURE ON THE MICROWAVE SURFACE-RESISTANCE OF THE PB DOPED BSCCO SYSTEM, Physica. C, Superconductivity, 235, 1994, pp. 1995-1996
Microwave surface resistance is analyzed in Bi-based sample supercondu
ctors prepared under different compaction pressures (250 to 1500 MPa).
The measurement is performed with the help of a new automatic measuri
ng system based on a resonant cavity. It was found that the best resul
ts are obtained for samples initially sintered at low compaction press
ure, then crushed and resintered for a short time at larger pressure.