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Effects of Pr doping and magnetic field on vortex pinning in Gd-123 based HTSC

Mohammadizadeh, M. R ; Sharif University of Technology | 2004

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  1. Type of Document: Article
  2. DOI: 10.1002/pssc.200304474
  3. Publisher: 2004
  4. Abstract:
  5. The magnetoresistance of single phase polycrystalline Gd(Ba 2-xPrx)Cu3O7-δ samples have been studied within 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 pinning energy shows that the Pr-doping, similar to weak links, decreases the vortex flux pinning energy. It is also concluded that the substitution of Pr at Ba site has a more destructive effect on the flux dynamics than Pr at rare earth site. © 2004 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
  6. Keywords:
  7. Doping (additives) ; Substitution reactions ; Praseodymium ; Polycrystalline materials ; Phase transitions ; Magnetoresistance
  8. Source: Physica Status Solidi C: Conferences ; Volume 1, Issue 7 , 2004 , Pages 1883-1886 ; 16101634 (ISSN)
  9. URL: https://onlinelibrary.wiley.com/doi/abs/10.1002/pssc.200304474