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Possible superconductivity in bu-rich prl23

Khosroabadi, H ; Sharif University of Technology | 2004

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  1. Type of Document: Article
  2. DOI: 10.1007/s10948-004-0834-4
  3. Publisher: 2004
  4. Abstract:
  5. Polycrystalline (Pr1-xBax)Ba2Cu3O 7-δ samples with 0.0 < x < 0.6 are prepared by the standard solid state reaction technique. X-ray diffraction and resistivity measurements are performed. For x < 0.3, the 123 phase is formed, but for x > 0.3, due to the solubility limit, the 123 phase is not the dominant phase. The normalized resistivity increases with the increase of Ba doping to about x = 0.08, and then decreases in the 123 phase up to x = 0.3. The existence of an extremum in the resistivity is explained as the competition between scattering by impurities and increase of the number of carriers by Ba doping. For x > 0.3, due to a large increase in the non-123 phase formation, the resistivity increases drastically. The normalized resistivity results suggest possible observation of superconductivity in Prl23 system by Ba doping. It also indicates that the reported superconductivity in Prl23 could be as the result of extra Ba concentration positioning at Pr site. © 2004 Springer Science+Business Media, Inc
  6. Keywords:
  7. HTSC ; Pr/Ba mis-substitution ; Resistivity ; Superconducting Prl23
  8. Source: Journal of Superconductivity and Novel Magnetism ; Volume 17, Issue 6 , 2004 , Pages 749-753 ; 15571939 (ISSN)
  9. URL: https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.127.187003