M. Buchgeister et al., PRESSURE-DEPENDENCE OF T-C OF Y1-XPRXBA2CU3O7-DELTA -THAN-OR-EQUAL-TO-DELTA-LESS-THAN-OR-EQUAL-TO-0.5), Physica. C, Superconductivity, 235, 1994, pp. 1471-1472
The system Y1-xPrxBa2Cu3O7-delta has been investigated for the pressur
e dependence of the superconducting critical temperature dT(c)/dP for
a range of Pr concentrations x with varying oxygen deficiency delta fo
r each Pr doping level. The variation of both parameters indicates a d
ependence of the T-c suppression by Pr under pressure on the mobile ho
le 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.