Effect of ZnO Nano-Oxide Addition on the Superconducting Properties of the (Bi.Pb)2223 Phase

Abstract:

The major limitation of Bi-system superconductor applications is the intergrain weak links and weak flux pinning capability producing low critical current density of the Bibased phases. In order to enhance these characteristics and other superconducting properties, effective flux pinning centers are introduced into high temperature superconductors. In this work, different weight percentages of ZnO nano oxide were introduced at the final stage of the Bi_1.8Pb_0.4Sr₂Ca₂Cu₃O_10-y superconductor preparation process. Phase characterization was completed by X-ray diffraction (XRD). Exact constitution of the samples was determined using particle induced X-ray emission (PIXE). Granular and microstructure were investigated using scanning electron microscopy (SEM). Electrical resistivity as function of the temperature was carried to evaluate the relative performance of samples, and finally, E-J characteristic curves were obtained at 77K. Using 0.4 ZnO weight percentage, the electrical and granular properties were greatly enhanced, indicating more efficient pinning mechanisms. A critical current density of 949 A/cm2 was obtained which represents more than twice the value obtained for the pure sample (Jc= 445 A/cm2).

• Periodical: Advanced Materials Research (Volume 324)
• Pages: 241-244
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.324.241
• Online since: August 2011
• Authors: R. Mawassi, R. Awad, Mohamad Roumie, M. Kork, I. Hassan
• Keywords: (Bi,Pb)-2223 Tape, Critical Current Density, E-j Characteristic, Microstructure, PIXE, SEM, Superconducting Transition Temperature

References

[1] J. Schwartz and S.Wu: Journal of Applied Physics. Vol. 73 (1993), p.1343.

[2] J. Shwartz, S. Nakamae, G.W. Raban Jr., J. k. Heuer, S. Wu, J.L. Wagner and D.G. Hinks: Physics Revue. B 48 (1993), p.2823.

[3] H.T. Ren, K. N. R. Taylor, Y. J. Chen, J. A. Xia and H. Qing: Physica C 216 (1993), p.447.

[4] M. J. Kramer, R. W. McCallum, W.J. Nellis, and U. Balachandran: Physica C 228 (1994), P. 265.

[5] Z.Y. Jia), H. Tang, Z.Q. Yang, Y.T. Xing, Y.Z. Wang, G.W. Qiao: Physica C 337 (2000), p.130.

[6] E. Guilmeau, B. Andrzejewski and J.G. Noudem : Physica C 387 (2003), p.382.

[7] M. Annabi, A. M. chirgui, F. Ben Azzouz, M. Zouaoui and M. Ben Salem: Physica C 405 (2004), p.25.

DOI: 10.1016/j.physc.2004.01.012

[8] F.I. Ezema and U. O. Nwankwo: Digest Journal of Nanomaterials and Biostructures, Vol. 5, No 4, (2010), p.981.

[9] X. Wang, Y. Ding, C. J. Summers and Z. L. Wang: J. Phys. Chem. B 108, 8773 (2004).

[10] J. A. Maxwell, J. L. Campbell and W. J. Teesdale: Nucl. Instr. and Meth. B43 (1989), p.218.

[11] Y. Ikeda, Z. Hiroi, H. Ito, S Shimomura, M Takano and Y. Bando: Physica C 165 (1989), p.189.

[12] H. Kitaguchi, J. Takada, K. Oda and Y. Miura: J. Mater. Res. 5: 1397 (1990).