Superconducting and normal state properties of Y1-xPrxNi2B2C

Electrical resistivity, magnetoresistance and magnetic susceptibility have been studied for Y1-xPrxNi2B2C samples with 0 less than or equal to x less than or equal to 1.0. The increase of Pr concentration x results in a rapid suppression of superconductivity, \ dT(c)/dx \ = 35 K. No indication on su perconductivity was observed for PrNi2B2C down to T = 0.35 K. The absence o f superconductivity for PrNi2B2C and the large superconductivity suppressio n rate \ dT(c)/dx \ for Y1-xPrxNi2B2C correlate with the anomalously high N 6el temperature of PrNi2B2C (T-N approximate to 4 K). Possible reasons for the absence of superconductivity in PrNi2B2C and the large \ dT(c)/dx \ val ue for Y1-xPrxNi2B2C are discussed. (C) 2001 Elsevier Science B.V. All righ ts reserved.