PRESSURE-DEPENDENCE OF T-C OF Y1-XPRXBA2CU3O7-DELTA (0.1-LESS-THAN-OR-EQUAL-TO-X-LESS-THAN-OR-EQUAL-TO-0.5,0-LESS-THAN-OR-EQUAL-TO-DELTA-LESS-THAN-OR-EQUAL-TO-0.5)

The system Y1-xPrxBa2Cu3O7-delta has been investigated for the pressure dependence of the superconducting critical temperature dT(c)/dP for a range of Pr concentrations x with varying oxygen deficiency delta for each Pr doping level. The variation of both parameters indicates a dependence of the T-c suppression by Pr under pressure on the mobile hole concentration in the CuO2 planes. Furthermore, effects of Josephson weak links in the samples are observed for higher levels of Pr doping and oxygen deficiency.