International Journal of
Physical Sciences

  • Abbreviation: Int. J. Phys. Sci.
  • Language: English
  • ISSN: 1992-1950
  • DOI: 10.5897/IJPS
  • Start Year: 2006
  • Published Articles: 2572

Full Length Research Paper

Enhanced superconducting properties of the Pb doped trilayer high-temperature (Bi2Sr2Can-1CunO2n+4δ) cuprate superconductor

Widad M. Faisal1 and Salwan K. J. Al-Ani2*      
1Department of Electronic and Communication, Faculty of Engineering and Petroleum, Hadramout University of Science and Technology, Yemen. 2Department of Physics, College of Science, University of Baghdad, Baghdad, Iraq.  
Email: [email protected]

  •  Accepted: 05 December 2011
  •  Published: 09 January 2012

Abstract

A ceramic superconductor compounds with the composition Bi2Sr2Can-1CunO2n+4δ were prepared by solid state reaction from the principle routs like Bi-2212,Ca2CO3 and CuO with high purity of 99.99%. Different measurement such as resistivity measurement, X-ray diffraction (XRD) and scanning electron microscope (SEM) were made to show the improvement in the superconductivity of the high phase. The lattice constants are obtained for undoped and Pb doped samples with different   values of n. The critical temperatures (Tc) of the high temperature superconducting cuprate (HTSC) Bi2Sr2Can-1CunO2n+4δwere obtained to be Tc =108K for the undoped sample and equal to 133, 115, 147 and 127K for n=3, n=3.5, n=4 and n=4.5 Pb doped systems, respectively.

 

Key words: Bi2Sr2Ca n-1CunO2n+4δ, HTSC, Pb doping, Electrical Resistivity, XRD, SEM.

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