Superconducting properties of bulk Bi1.6Pb0.4Sr2Ca2− xCdxCu3O10 system prepared via conventional solid state and coprecipitation methods

Hamadneh, Imad and Agil, A. and Yahya, Ahmad Kamal and Shari, Abdul Halim (2007) Superconducting properties of bulk Bi1.6Pb0.4Sr2Ca2− xCdxCu3O10 system prepared via conventional solid state and coprecipitation methods. Physica C: Superconductivity, 463-465 (1). pp. 207-210. ISSN 0921-4534

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Official URL: http://dx.doi.org/10.1016/j.physc.2007.03.445

Abstract

The effect of Cd doping on the superconducting properties of BSCCO system with nominal starting compositions of Bi1.6Pb0.4Sr2Ca2−xCdxCu3O10 (x = 0.00–0.10) was studied. The preparation methods used to prepare the samples are the conventional solid-state oxide powder (SSR) and the coprecipitation (COP) techniques. Resistivity versus temperature measurements (R–T) showed that all doped samples exhibited metallic behaviour. For the SSR samples, existence of a two step feature was observed at x = 0.07 indicating the presence a lower temperature 2212 phase together with the higher temperature 2223 phase. This behaviour resulted in the shifting of the TC(R=0) towards lower temperature. However, the COP samples showed better superconducting properties probably due to higher homogeneity resulted from mixing of sub-micron particles during sintering. The R–T curve did not display any two step features due to the single phase nature of the samples. This is confirmed by the XRD data where Bi-2212 phase was minor. In addition, small amount of doping (x = 0.02 in COP and SSR samples) enhanced the phase formation and TC(R=0).

Item Type:Article
Keyword:Superconductor, Cd substitution, Phase formation
Faculty or Institute:Faculty of Science
Publisher:Elsevier
DOI Number:10.1016/j.physc.2007.03.445
ID Code:7520
Deposited By: Najwani Amir Sariffudin
Deposited On:20 Jul 2010 06:47
Last Modified:20 Jul 2010 07:04

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