• DocumentCode
    1241817
  • Title

    Magnetic ion Fe and Ni doping in the Cu-O chain and the CuO2 plane in YBa2Cu3O7-δ: a positron study

  • Author

    Zhang, Jincang ; Li, Pinglin ; Deng, Dongmei ; Liu, Lihua ; Cao, Shixun

  • Author_Institution
    Dept. of Phys., Shanghai Univ., China
  • Volume
    13
  • Issue
    2
  • fYear
    2003
  • fDate
    6/1/2003 12:00:00 AM
  • Firstpage
    3140
  • Lastpage
    3143
  • Abstract
    Fe and Ni substitutions in the Cu-O chain and the CuO2 plane are studied by positron lifetime experiment. Change of lifetime parameters is given and local electron density is evaluated as a function of substitution content. The results show fantastic and opposite behaviors for Fe and Ni substitutions. A strengthen effect of the localized carriers in the CuO2 planes for Ni substitution and electronic weak localization in the Cu-O chains for Fe substitution are found in YBa2Cu3O7-δ superconducting systems. The positron distribution and the annihilation mechanism are also discussed.
  • Keywords
    barium compounds; high-temperature superconductors; positron annihilation; yttrium compounds; YBa2(CuFeNi)3O7; YBa2Cu3O7-δ; electron density; electronic weak localization; high-Tc superconductor; magnetic ion substitution; positron annihilation; positron distribution; positron lifetime; Degradation; Doping; Electrons; Iron; Laboratories; Physics; Positrons; Scattering; Superconducting magnets; Superconductivity;
  • fLanguage
    English
  • Journal_Title
    Applied Superconductivity, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    1051-8223
  • Type

    jour

  • DOI
    10.1109/TASC.2003.812124
  • Filename
    1212289
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1241817