systematically examined by the magnetic susceptibility and resistivity measurements. Both alloy systems have shown bulk superconductivity and metallic conductivity in normal state. Furthermore, the superconducting onset temperature (Tc) gradually decreased with higher Pb content for both systems. The Tc dropped from 3.7 K for BiPd to 2.7 K for Bi0.8Pb0.2Pd, whereas the Tc dropped from 5.3 K for Bi2Pd to
摘要 采用简便的固相反应法合成了一系列掺
铅铋基合
金α-Bi1-xPbxPd (0 ≤ x ≤ 0.5) 和β-Bi2-xPbxPd (0 ≤ x ≤ 0.6)。粉末X射线衍射证实,Pb掺杂后样品的晶体结构保持不变,随着Pb含量的增加,晶胞体积减小。已通过磁化率和电阻率测量系统地研究了 Pb 掺杂效应对 BiPd 和
Bi2Pd 合
金超导性的影响。两种合
金系统在正常状态下都显示出体超导性和
金属导电性。此外,两种系统的超导起始温度(Tc)随着
铅含量的增加而逐渐降低。Tc 从 BiPd 的 3.7 K 下降到 Bi0.8Pb0.2Pd 的 2.7 K,而 的 Tc 从 5.3 K 下降到 Bi1.5Pb0.5Pd 的 2.4 K。