The optimum percentage of Pb and the appropriate thermal procedure for the preparation of the 110 K Bi2-xPbxSr2Ca2Cu3Oy superconductor

M Pissas; D Niarchos; C Christides; M Anagnostou

doi:10.1088/0953-2048/3/3/005

Superconductor Science and Technology

The optimum percentage of Pb and the appropriate thermal procedure for the preparation of the 110 K Bi_2-xPb_xSr₂Ca₂Cu₃O_y superconductor

M Pissas¹, D Niarchos¹, C Christides¹ and M Anagnostou¹

Published under licence by IOP Publishing Ltd
Superconductor Science and Technology, Volume 3, Number 3 Citation M Pissas et al 1990 Supercond. Sci. Technol. 3 128 DOI 10.1088/0953-2048/3/3/005

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¹ Nat. Center for Sci. Res. Demokritos, Inst. of Mater. Sci., Aghia Paraskevi Attikis, Greece

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Abstract

The high-T_c phase (110 K) of the Bi_2-xPb_xSr₂Ca₂Cu₃O_y system has been synthesised and the role of Bi/Pb substitution has been studied extensively using X-ray diffraction studies, electrical resistivity and magnetisation measurements and scanning electron microscopy. It was found that the best results were obtained for x=0.2-0.3 and that a 'step sintering process' is necessary for a better control of the thermal process.

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