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The Investigation of the Weak Link Behavior in the Niobium (Nb) Doped Bi1.6Pb0.4Sr2Ca2Cu3O δ Superconductor


The Nb substitution effect on structural, DC electrical resistivity, and AC susceptibility properties of polycrystalline Bi1.6Pb0.4Sr2Ca2Cu3O δ samples is investigated. The behavior of weak link and intergranular coupling in the substituted samples is discussed. While the Bi-2223 phase concentration increases in the X-ray diffraction (XRD) pattern, the intragrain transition temperature remains nearly unchanged in the substituted samples. The intergrain transition temperature is changed with Nb substitution.

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Jafari, M., Sedghi, H. & Esmaeili, A. The Investigation of the Weak Link Behavior in the Niobium (Nb) Doped Bi1.6Pb0.4Sr2Ca2Cu3O δ Superconductor. J Supercond Nov Magn 26, 3331–3338 (2013).

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  • High-temperature superconductivity
  • Bi-base
  • Nb doped
  • Susceptibility
  • Critical current
  • Arrhenius plot