Influence of Sr(BO2)2 Doping on Superconducting Properties of (Bi,Pb)-2223 Phase
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Influence of Sr(BO2)2 Doping on Superconducting Properties of (Bi,Pb)-2223 Phase

Authors: N. G. Margiani, I. G. Kvartskhava, G. A. Mumladze, Z. A. Adamia


Chemical doping with different elements and compounds at various amounts represents the most suitable approach to improve the superconducting properties of bismuth-based superconductors for technological applications. In this paper, the influence of partial substitution of Sr(BO2)2 for SrO on the phase formation kinetics and transport properties of (Bi,Pb)-2223 HTS has been studied for the first time. Samples with nominal composition Bi1.7Pb0.3Sr2-xCa2Cu3Oy[Sr(BO2)2]x, x=0, 0.0375, 0.075, 0.15, 0.25, were prepared by the standard solid state processing. The appropriate mixtures were calcined at 845 oC for 40 h. The resulting materials were pressed into pellets and annealed at 837 oC for 30 h in air. Superconducting properties of undoped (reference) and Sr(BO2)2-doped (Bi,Pb)-2223 compounds were investigated through X-ray diffraction (XRD), resistivity (ρ) and transport critical current density (Jc) measurements. The surface morphology changes in the prepared samples were examined by scanning electron microscope (SEM). XRD and Jc studies have shown that the low level Sr(BO2)2 doping (x=0.0375-0.075) to the Sr-site promotes the formation of high-Tc phase and leads to the enhancement of current carrying capacity in (Bi,Pb)-2223 HTS. The doped sample with x=0.0375 has the best performance compared to other prepared samples. The estimated volume fraction of (Bi,Pb)-2223 phase increases from ~25 % for reference specimen to ~70 % for x=0.0375. Moreover, strong increase in the self-field Jc value was observed for this dopant amount (Jc=340 A/cm2), compared to an undoped sample (Jc=110 A/cm2). Pronounced enhancement of superconducting properties of (Bi,Pb)-2223 superconductor can be attributed to the acceleration of high-Tc phase formation as well as the improvement of inter-grain connectivity by small amounts of Sr(BO2)2 dopant.

Keywords: Bismuth-based superconductor, critical current density, phase formation, Sr(BO2)2 doping.

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[1] H. Maeda, Y. Tanaka, M. Fukutomi, and T. Asano, “A new high-Tc oxide superconductor without a rare earth element”, Jpn. J. Appl. Phys., vol. 27, part 2, no. 2, pp. L209-L210, 1988.
[2] J. K. F. Yau, and Y. L. Wong, “Rapid synthesize of Bi-2223 precursor for the fabrication of superconducting tapes using electrophoretic deposition”, Physica C, vol. 339, no.2, pp. 79-87, 2000.
[3] V. Garnier, I. Monot, and G. Desgardin, “Optimization of calcination conditions on the Bi-2223 kinetic formation and grain size”, Supercond. Sci. Technol., vol. 13, no. 5, pp. 602-611, 2000.
[4] P. Rani, R. S. Meena, A. K. Hafiz, and V. P. S. Awana, “Magnetic Susceptibility and High Field Magneto-transport of Silver-Added Bi-2223 Superconductor: a Revisit”, J. Supercond. Nov. Magn., vol.30, no. 7, pp. 1737-1747, 2017
[5] M. Takano, J. Takada, K. Oda, H. Kitaguchi, Y. Miura, Y. Ikeda, et al, “High-Tc phase promoted and stabilized in the Bi, Pb–Sr–Ca–Cu–O system”, Jpn. J. Appl. Phys., vol. 27, part 2, no. 6, pp. L1041-L1043, 1988.
[6] A. Zelati, A. Amirabadizadeh, A. Kompany, H. Salamati, and J. Sonier, “Critical current density and intergranular coupling study of the dysprosium oxide nanoparticle added Bi1,6Pb0.4Sr2Ca2Cu3Oy superconductor”, J. Supercond. Nov. Magn, vol. 27, no. 10, pp. 2185-2193, 2014.
[7] H. Öztürk, and S. Safran, “Effects of carbon-encapsulated nano boron addition on superconducting parameters of BSCCO”, Journal of Alloys and Compounds, vol. 73, pp.831-838, 2018
[8] M. M. Abbas, and H. D. Dehi, “Influences of K substitution on Bi(Pb)-2223 superconductors”, International Journal of Engineering and Advanced Technology, IJEAT , vol. 4, no. 2, pp. 177-179, 2014.
[9] S. F. Oboudi, “Synthesis and magnetic properties of Bi1.7Pb0.3Sr2Ca2Cu3O10+δ added with nano Y”, J. Supercond. Nov. Magn., vol. 30, no. 6, pp. 1473-1482, 2017.
[10] N. G. Margiani, G. A. Mumladze, Z. A. Adamia, N. A. Papunashvili, and D. I. Dzanashvili, “Influence of Pb(BO2)2 doping on superconducting properties of (Bi,Pb)-2223 HTS”, J. Supercond. Nov. Magn., vol. 28, no 2, pp. 499-502, 2015.
[11] N. G. Margiani, G. A. Mumladze, N. A. Papunashvili, Z. A. Adamia, and D. I. Dzanashvili, “Effect of BN-added precursors on phase formation and transport properties of (Bi, Pb)-2223 HTS”, J. Supercond. Nov. Magn., vol. 27, no 2, pp. 397-400, 2014.
[12] N. G. Margiani, G. A. Mumladze, Z. A. Adamia, А. S. Kuzanyan, and V. V. Zhghamadze, “Influence of B4C doping and high-energy ball milling on phase formation and critical current density of (Bi,Pb)-2223 HTS”, Physica C: Superconductivity and its applications, vol. 548, pp. 86-89, 2018.
[13] M. S. Lee, K. Y. Song, “Effect of Nd substitution for the Ca site in the 110 K phase of (Bi,Pb)–Sr–Ca–Cu–O superconductors”, Supercond. Sci. Technol., vol. 15, no. 6, pp. 851-854, 2002.
[14] V. V. Zhgamadze, N. G. Margiani, I. A. Mzhavanadze, N. G. Sabashvili, G. A. Tsintsadze, and G. A. Shurgaya, “Influence of a boron oxide admixture on the superconducting properties of the bismuth-containing 2212 phase”, Low Temperature Physics, vol. 30, pp. 937-940, 2004.
[15] A. Aytimur, I. Uslu, E. Çınar, S. Koçyiğit, F. Özcan, and A. Akdemir, “Synthesis and characterization of boron doped bismuth–calcium–cobalt oxide nanoceramic powders via polymeric precursor technique”, Ceramics International, vol. 39, pp. 911–916, 2013.
[16] S. Bolat, E. Yanmaz, and H. Comert, “Properties of Ag-doped Bi1,6Pb0.4Sr2Ca3Cu4−xAgxOy (2234) Oxides Prepared by S.S.R. Method”, Turk J Phys, vol. 24, pp. 129-136, 2000.