Effect of paramagnetic rare earth ions on the superconducting transition temperature of the heusler alloy Pd2YSn

✍ Scribed by A.M. Umarji; S.K. Malik; G.K. Shenoy

• Publisher: Elsevier Science
• Year: 1985
• Weight: 231 KB
• Volume: 135
• Category: Article
• ISSN: 0378-4363
• DOI: 10.1016/0378-4363(85)90522-4

✦ Synopsis

The compound Pd2YSn crystallizes in the cubic Heusler L21 structure and is superconducting with a transition temperature (7",.) of 4.55 K. The effect of replacing Y by other paramagnetic rare earths on the superconducting transition temperature has been investigated in the series Pd2Y 1 xRxSn (R = Gd, Dy, Ho, Er, Tm and Yb). The results of the T~ measurements are analysed in terms of the Abrikosov-Gor'kov theory. Values of the exchange constant Jsf for interaction between the conduction electron spins and the rare earth spins, are estimated from these measurements.