Magnetic relaxation and flux creep in superconducting YBCO thin films


Demirel A.

MODERN PHYSICS LETTERS B, vol.17, pp.1075-1080, 2003 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 17
  • Publication Date: 2003
  • Doi Number: 10.1142/s0217984903006104
  • Journal Name: MODERN PHYSICS LETTERS B
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1075-1080
  • Van Yüzüncü Yıl University Affiliated: No

Abstract

In this work, the temperature dependence of the magnetic relaxation in samples of YBa2Cu3O7 (YBCO) thin films of two different qualities grown on MgO by metal organic chemical deposition technique (MOCVD) is measured in the range of 4.2-80 K using an initial applied magnetic field of 0.1 T. The relaxation data are analyzed in terms of a single effective activation energy and then more correctly of a distribution of activation energies. The single activation energies extracted are in broad agreement with published results.