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AC losses in Sn-doped Bi1.6Pb0.4Sr2(Ca1-xSnx)2Cu3Oδ superconductors


Hashim @ Ismail, Azhan and Shaari, Abdul Halim and Ahmad @ Muhamad, Nazree and Kassim, Azman and Senawi, Syamsyir Akmal (2014) AC losses in Sn-doped Bi1.6Pb0.4Sr2(Ca1-xSnx)2Cu3Oδ superconductors. Advanced Materials Research, 895. pp. 99-104. ISSN 1022-6680; ESSN: 1662-8985


Measurements of complex AC susceptibility χ = χ + χ as a function of temperature have been carried out on Sn-doped Bi1.6Pb0.4Sr2(Ca1-xSnx)2Cu3Oδ superconductor samples prepared via the conventional solid state reaction method. All the samples exhibit perfect diamagnetism below 109 K. The χ (T) curves display two-step features, indicating the presence of mixed phases and therefore weakening of the grains' coupling. The amount of shielded volume in Sn-free samples is greater than that in Sn-doped samples. The intrinsic peak due to the small AC losses within the grain was not observed in the χ (T) curves for all samples. However, the coupling peak, TP, for Sn-free samples at an applied field of 1.0 Oe was observed at 89 K and shifted to a lower temperature ranging from 59 K to 64.2 K in Sn-doped samples. The amounts of hysteresis losses above the TP in all doped samples were smaller than that of the Sn-free sample. Therefore, the effect of Sn doping suppressed the inter-granular critical current, Jcm, and the presence of weak links that coupled the superconducting grains.

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Official URL or Download Paper: http://www.scientific.net/AMR.895.99

Additional Metadata

Item Type: Article
Divisions: Faculty of Science
DOI Number: https://doi.org/10.4028/www.scientific.net/AMR.895.99
Publisher: Trans Tech Publications
Keywords: AC losses; BSCCO; Sn-doped; Superconductor
Depositing User: Nabilah Mustapa
Date Deposited: 29 Dec 2015 12:30
Last Modified: 11 Oct 2018 07:36
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.4028/www.scientific.net/AMR.895.99
URI: http://psasir.upm.edu.my/id/eprint/36309
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