The electrical transport properties of high quality Bi-2223 crystal

We have studied electrical transport properties of a high quality Bi2Sr2Ca2Cu3O10 + x crystal below a superconducting critical temperature, Tc. In magnetic fields B parallel to the c axis just above a voltage response onset resistance versus temperature data are well fitted to the vortex-glass model. Obtained from the vortex-glass analysis, a melting transition boundary for Bi-2223 crystal is shifted towards lower temperatures compared to previously reported data for a (Bi, Pb)-2223 single crystal. The critical current density, Jc, of Bi-2223 crystals is close to Jc values presented elsewhere for Bi-2223 tapes, suggesting a principal role of weak intrinsic pinning properties of Bi-2223 as a main limiting factor of Jc of Bi-2223 conductors.