Effect of K substitution on Structural, Electrical and Magnetic Properties of Bi-2212 system



In this work, the effect of K in the Bi2Sr2Ca1−xKxCu2O8+y superconductor with x = 0.0, 0.05, 0.075, and 0.1, has been investigated. The samples were prepared by a polymer solution technique using polyethyleneimine, PEI. The effects of K substitution have been investigated by electrical resistivity (ρT), scanning electron microscopy (SEM), X-ray diffraction (XRD), energy dispersive X-ray spectroscopy, and magnetic characterizations. SEM and XRD results have shown that the Bi-(2212) phase is the major one independently of the K concentration. Moreover, the microstructure of samples is improved with K-concentration up to x = 0.075. From electrical resistivity measurements we have found that Tc is slightly higher than 91 K for K-concentrations up to 0.075, and then it decreases for higher doping for about 0.5 K. Moreover, this trend is maintained in the magnetic measurements in which the hysteresis loops are increased until 0.075 K-concentrations. The maximum calculated Jc, using Bean’s model, has been found at around 4.5 10A/cm2 at 10 K and ~1,000 Oe for the 0.05 K doped samples.


Critical Current Density Superconducting Property Zero Field Cool Onset Transition Temperature BSCCO Superconductor 
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.



This work is supported by Research Fund of Cukurova University, Adana, Turkey, under Grant Contracts No: FEF 2013YL17 and 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)ZaragozaSpain

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