Superconducting Dy1-x(Gd,Yb)xBa2Cu3O7-δ thin films made by Chemical Solution Deposition

Yuri Aparecido Opata, Anders Christian Wulff, Jørn Otto Bindslev Hansen, Zhao Yue, Jean-Claude Grivel

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Abstract

Dy1-x(Gd or Yb)xBa2Cu3O7-δ samples were prepared using chemical solution deposition (CSD), based on trifluoroacetate metal-organic decomposition (MOD) methods. X-ray diffraction results demonstrated the formation of the RE123 superconducting phase with a strong in-plane and out-of-plane texture. c-lattice constants were observed to decrease for all samples doped with Gd or Yb. Measurements of the onset critical transition temperature (Tonsetc ) were found to decrease with increasing Yb content, while only minor changes were observed for samples with Gd. Critical current density (Jc) analysis demonstrated that doping with Yb significantly increased the self-field Jc value from 3.8 MA/cm2 to 6.0 MA/cm2 for the pureand 10 % Yb doped sample, respectively. In contrast, samples doped with Gd were characterized by the lowest self-field Jc values. Investigation of pinning force mechanisms revealed that the samples in this study were dominated by normal surface pinning.
Original languageEnglish
Article number7500705
JournalI E E E Transactions on Applied Superconductivity
Volume26
Issue number3
Number of pages5
ISSN1051-8223
DOIs
Publication statusPublished - 2016

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Keywords

  • Superconducting
  • Thin film
  • Pinning force
  • Doping
  • Critical current density

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