Superconducting Properties of adipic acid doped Bulk MgB2 Superconductor - Condensed Matter > SuperconductivityReport as inadecuate




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Abstract: We report the effect of adipic acid C6H10O4 doping on lattice parameters,microstructure, critical temperature Tc, current density Jc, andirreversibility field Hirr for MgB2 superconductor. Actual carbon Csubstitution level for boron B is estimated to be from 0.40 percent to 2.95percent for different doping levels. A reduction in Tc from 38.43 to 34.93 Kand in lattice parameter a from 3.0843 A to 3.0756 Ais observed for the10wt percent C6H10O4 doped sample in comparison to pristine MgB2. This is anindication of C substitution at boron sites, with the C coming from thedecomposition of C6H10O4 at the time of reaction. Interestingly the dopedsamples have resulted in significant enhancement of Jc and Hirr. All the dopedsamples exhibit the Jc value of the order of 10^4 A-cm2 at 5 K and 8 T, whichis higher by an order of magnitude as compared to undoped sample. This resultindicates that C6H10O4 is a promising material for MgB2 for obtaining theexcellent Jc values under higher magnetic fields.



Author: Arpita Vajpayee, V. P. S. Awana, G. L. Bhalla, A.K. Nigam, H. Kishan

Source: https://arxiv.org/



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