Abstract
(Bi,Pb):2223 superconducting samples were obtained by using solid state reaction method. The effect of partial substitution of Ca by R=Sm, La on the structural and magnetic properties of (Bi1.6Pb0.4)(Sr1.8Ba0.2)(Ca1-xRx)2Cu3Oy with 0≤ x ≤0.05 were investigated by XRD and ac magnetic susceptibility measurements. The intergranular critical current density function of temperature JcJ(T), were obtained and agree with the SNS behavior of grain boundaries.
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