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Resistivity and magnetic susceptibility studies of TBCCO before and after doping with lithium-fluorine.

Author(s) : HAMALAWY A. A. el-, ZAIDIA M. M. el-, AMMAR A. A., ELKHOLY M. M.

Type of article: Article

Summary

It was found that the transition temperature was increased up to 5 wt% of lithium-fluorine for the 2223 compound. Further addition of lithium-fluorine decreases the transition temperature. Therefore, 5 wt% lithium-fluorine is the optimum concentration giving a transition temperature of 130 K. Measurements of the superconducting resistance of all the samples except the (1111) compound show that the addition of 5 wt% lithium-fluorine increases the transition temperature and decreases the metastable phases. The real part of the alternating-current magnetic susceptibility and its temperature dependence for the prepared TBCCO having stoichiometric composition of (1111), (2223), (2234) and (3245) and that after doping with 5 wt% lithium-fluorine are studied. The addition of lithium-fluorine decreases the fluctuation in the transition region and its effect in reducing the number of multiphases.

Details

  • Original title: Resistivity and magnetic susceptibility studies of TBCCO before and after doping with lithium-fluorine.
  • Record ID : 1994-0779
  • Languages: English
  • Source: J. Supercond. - vol. 6 - n. 2
  • Publication date: 1993/04
  • Document available for consultation in the library of the IIR headquarters only.

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