Pinning Behaviour of Nano Nonmagnetic CuO, SnO2 and Magnetic Mn3O4 Substitutions in YBCO Bulk Superconductors

  • A. H. SalamaEmail author
  • M. El-Hofy
  • Y. S. Rammah
  • M. Elkhatib
High-Performance Ceramics


Nanoparticles were doped into YBCO samples as pinning centres by chemical solid-state reaction. High magnetic moment nanoparticles Mn3O4 and nonmagnetic nanoparticles SnO2 and CuO were prepared with a concentration of 0.1, 0.2, 0.3, 0.4 and 0.5 mass-%, respectively by a co-precipitation method. The microstructure and electrical properties of the doped YBCO samples was investigated. Increasing SnO2 in the YBCO samples from 0.1 mass-% to 0.5 mass-% tended together at one point through the sample and appeared as a defect that affects the lattice parameters of the YBCO crystal, which in turn led to degradation of the critical temperature Tc, which did not differ much from the CuO effect, which was added in the same proportions, but it was distributed through the samples. On the contrary, Mn3O4 acted as nano-pinning centre through the sample, which in turn initially led to an improvement of the critical temperature Tc. Further increase of Mn3O4 content, Tc began to decay which is due to the distortion of the lattice parameters of the YBCO crystal.


high-temperature superconductors nano-magnetic metal oxides nano-nonmagnetic metal oxides solid-state reaction flux pinning and critical temperature 


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Copyright information

© Springer Fachmedien Wiesbaden 2016

Authors and Affiliations

  • A. H. Salama
    • 1
    Email author
  • M. El-Hofy
    • 2
  • Y. S. Rammah
    • 2
  • M. Elkhatib
    • 2
  1. 1.Department of Physical Chemistry, Inorganic Chemical Industries and Mineral Resources DivisionNational Research CentreGizaEgypt
  2. 2.Department of Physics, Faculty of ScienceMenoufia UniversityShebin El-KoomEgypt

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