ACTA

Superconducting Properties of BiPbSrCsCuO and BiSrCaCuO Glass-Ceramics

W. Miller^a, K. Borówko^a, M. Gazda^a, S. Stizza^b and R. Natali^b
^aFaculty of Applied Physics and Mathematics, Gdańsk University of Technology, Narutowicza 11/12, 80-952 Gdańsk, Poland
^bDipartimento di Matematica e Fisica, Università di Camerino, INFM, Italia

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Received: 25 09 2005;

In this work we study the main differences between the superconducting properties of the Bi₄Sr₃Ca₃Cu₄O_x and (Bi_0.8Pb_0.2)₄Sr₃Ca₃Cu₄O_x glass-ceramics. The Bi₄Sr₃Ca₃Cu₄O_x and (Bi_0.8Pb_0.2)₄Sr₃Ca₃Cu₄O_x glass-ceramics prepared in the same conditions contain similar amounts of the superconducting 2212 phase, however their superconducting and normal-state electrical properties differ significantly. The main reason which makes BiSrCaCuO glass-ceramics worse superconductor than BiPbSrCaCuO is its microstructure.

DOI: 10.12693/APhysPolA.109.627
PACS numbers: 74.72.Hs, 72.80.Ng