Physical, mechanical and magnetic properties of the Yb-substituted Bi 2Sr2Ca1Cu2O y textured superconductor

In this study, samples with nominal composition of Bi2Sr 2Ca1Cu2-x Yb x O y, where x=0.0, 0.05, 0.1 and 0.25, have been textured using the Laser Floating Zone technique. The effects of different Yb doping on the structure have been investigated by electrical resistivity, scanning electron microscopy, XRD, mechanical and dc-magnetization techniques. It has been found that with increasing Yb3+ doping for Cu, the physical and superconducting properties of structure gradually decrease. J C values, calculated using the Bean's model, significantly change, although T C is approximately the same for all samples. © 2012 Springer Science+Business Media, LLC.Gobierno de Aragón MAT2008-00429Acknowledgements This work is supported by the Research Fund of Cukurova University, Adana, Turkey, under grant contracts No. FEF 2011D21. The Spanish MICINN-FEDER (Project MAT2008-00429) and the Gobierno de Aragón (Consolidated Research Group T12) are acknowledged for financial support