Loading...

Thermally activated flux creep in the Gd(Ba2-xPrx)Cu3O7+δ system

Mohammadizadeh, M. R ; Sharif University of Technology | 2003

83 Viewed
  1. Type of Document: Article
  2. DOI: 10.1088/0953-2048/16/4/320
  3. Publisher: 2003
  4. Abstract:
  5. The magnetoresistance of single-phase polycrystalline Gd(Ba2-xPrx)Cu3O7+δ samples has been studied within the thermally activated flux creep model. The decrease of pinning energy with applied magnetic field can be scaled to two power-law relations for magnetic fields, smaller and also larger than about 1 kOe. The derived Hc2(T), Hc2(O), and superconducting coherence length ξ show that the Pr doping, similar to weak links, decreases the vortex flux pinning energy. It is also concluded that the substitution of Pr at the Ba site has a more destructive effect on the flux dynamics than Pr at the rare-earth site
  6. Keywords:
  7. Computer simulation ; X ray diffraction analysis ; Temperature ; Superconductivity ; Scanning electron microscopy ; Magnetoresistance ; Magnetization ; Magnetic field effects ; Heat treatment ; Creep
  8. Source: Superconductor Science and Technology ; Volume 16, Issue 4 , 2003 , Pages 538-544 ; 09532048 (ISSN)
  9. URL: https://iopscience.iop.org/article/10.1088/0953-2048/16/4/320/meta