Fahmi Astuti, Darminto, Malik Anjelh Baqiya : Effect of Pb substitution on superconducting and electrical properties of Bi2Sr2CaCu2O8+#963 nanopowders

Fahmi Astuti S.Si, M.Si
Prof. Dr. Drs. Darminto M.Sc
Malik Anjelh Baqiya S.Si., M.Si.,Ph.D.

Year

2014

Published in

2nd International Conference on Functional Material Science

External link

-

Type

Seminar Internasional

Keywords

Dissolved method Four point probe Flux pinning Sintering SQUID XRD


Abstract

The powders of Bi2-xPbxSr2CaCu2O8+#948 (x=0 0.4) superconductor have been prepared by using dissolved method followed by short period of sintering and calcination process. The 2212 phase of Bi-based system has been formed and observed by using X-ray diffraction (XRD) measurement. The superconducting quantum interference device (SQUID) observation showed that the Bi2-xPbxSr2CaCu2O8+#948 (x=0 0.4) samples exhibited diamagnetic behaviour at the critical temperature, Tc=76 K and 78 K. The sample with partial Pb substitution exhibited stronger permanency to the external magnetic field indicating presence of flux pinning. The four point probe (FPP) measurement showed that the sample partially doped with Pb has lower resistivity (more metallic) than the Pb-free sample in the normal state.