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Improvement of superconducting properties in Na-doped BSCCO superconductor

  • B. Özçelik
  • M. Gürsul
  • A. Sotelo
  • M. A. Madre
Article

Abstract

In this study, the effect of Na substitution on the structural, electrical and magnetic properties of Bi2Sr2Ca1−xNaxCu2O8+y superconductor with x = 0.0, 0.05, 0.075, 0.1, 0.15, and 0.2 has been investigated. The effects of partial replacement of Na for Ca have been investigated by electrical resistivity (ρT), scanning electron microscopy (SEM), X-ray diffraction (XRD), and magnetic characterizations. XRD results have shown that the Bi-(2212) phase is the major one independently of the Na-concentration. SEM results indicate that the microstructure of samples is improved with increasing of Na-contents. From the electrical resistivity measurements it has been found that Tc is slightly higher than 92 K for Na-concentrations up to 0.20. Moreover, this trend is maintained in the magnetic measurements where the hysteresis loops are increased with increasing Na-concentrations. The maximum calculated Jc, using Bean’s model, is around 10 × 106 A/cm2 at 10 K and ~1,000 Oe for the 0.075 Na doped samples.

Keywords

Critical Current Density Superconducting Property Zero Field Cool High Critical Temperature High Critical Current Density 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgments

This work is supported by Research Fund of Cukurova University, Adana, Turkey, under Grant Contracts No: FEF2013BAP22.

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Copyright information

© Springer Science+Business Media New York 2014

Authors and Affiliations

  • B. Özçelik
    • 1
  • M. Gürsul
    • 1
  • A. Sotelo
    • 2
  • M. A. Madre
    • 2
  1. 1.Department of Physics, Faculty of Sciences and LettersÇukurova UniversityAdanaTurkey
  2. 2.ICMA (CSIC-Universidad de Zaragoza)SaragossaSpain

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