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The superconductivity of YBa2Cu3O7-δ reacted with nano-SiC


Citation

Wan Shaaidi, Wan Nurul Ain and Lim, Kean Pah and Matori, Khamirul Amin and Saion, Elias and Shaari, Abdul Halim and Chen, Soo Kien (2014) The superconductivity of YBa2Cu3O7-δ reacted with nano-SiC. Solid State Science and Technology, 22 (1 & 2). pp. 132-138. ISSN 0128-7389

Abstract

We report on the influence of nano-SiC as an additive on the superconductivity of polycrystalline YBa2Cu3O7-δ (YBCO) prepared via solid state reaction method. In particular, we studied the characteristic of superconducting transition temperature (Tc), crystal structure and microstructure of the YBCO system. X-ray diffraction patterns show the dominance of YBCO (123) phase in all the samples. The a and c axes increase slightly while the b-axis decreases with SiC addition causing the reduced orthorhombicity. Measurements of resistance versus temperature show that the normal state changes from metallic to semiconducting like behavior upon increasing the amount of additive from 1.5 wt.% onwards. The Tc-onset was found to decrease from 91 K for pure samples to 78 K for the 2 wt. % sample attributable to the adverse effect of Si. The broadening in superconducting transition breadth, ΔT indicates degraded crystallinity or inhomogeneity in the samples caused by SiC additions.


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Additional Metadata

Item Type: Article
Divisions: Faculty of Science
Publisher: Malaysian Solid State Science and Technology Society
Keywords: YBCO; Lattice parameters; Superconducting transition temperature
Depositing User: Nurul Ainie Mokhtar
Date Deposited: 17 May 2016 07:43
Last Modified: 13 Sep 2017 03:35
URI: http://psasir.upm.edu.my/id/eprint/35820
Statistic Details: View Download Statistic

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