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Effect of Nd doping on the grain-matrix contribution to ac losses in sintered Bi1.6Pb0.4Sr2(Ca1−xNdx)2Cu3Oδ superconductors |
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| Authors: | S elebi, A.I Malik, F Inanir,S.A Halim |
| Affiliation: | a Department of Physics, Faculty of Science and Arts, Karadeniz Technical University, Trabzon 61080, Turkey b Superconductor and Thin Film Laboratory, Department of Physics, Faculty of Science and Environmental Studies, Universiti Putra Malaysia, Serdang 43400, Selangor D.E., Malaysia c Department of Physics, Rize Faculty of Science and Arts, Karadeniz Technical University, Rize, Turkey |
| Abstract: | We have carried out measurements of complex ac susceptibility χ=χ′+χ″ as a function of temperature and ac field amplitude on rectangular bar-shaped high-temperature superconductors (HTS) with nominal composition of Bi1.6Pb0.4Sr2(Ca1−xNdx)2Cu3Oδ superconducting samples prepared by the solid-state reaction method. The effect of Nd-substitution on the Bi–(Pb)–Sr–Ca–Cu–O system has been investigated in terms of ac susceptibility study. We estimated the effective volume fraction of the grains and the field dependence of the inter-granular critical current density comparing the maximum of the extracted matrix susceptibility and the corresponding calculated data which was obtained employing the power law critical state model. |
| Keywords: | Author Keywords: Bi–(Pb)–Sr–Ca–Cu–O High-Tc superconductors AC loss Critical current density Nd doping |
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