Magnetoresistivity properties and effective activation energy in YBa2Cu3O7-rho superconducting thin film


Demirel A. I. , Orak S.

MODERN PHYSICS LETTERS B, cilt.20, ss.1847-1852, 2006 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 20 Konu: 29
  • Basım Tarihi: 2006
  • Doi Numarası: 10.1142/s0217984906012274
  • Dergi Adı: MODERN PHYSICS LETTERS B
  • Sayfa Sayıları: ss.1847-1852

Özet

The resistive properties and activation energy of YBa2Cu3O7-delta (YBCO) superconducting materials change in magnetic field. It is explained that magnetoresistive behavior in terms of the presence of two-dimensional vortices being pinned effectively when they are perpendicular to the CuO2 planes and an exponential behavior of the activation energy versus the applied field was obtained. The resulting activation energies ranging from 1 to 5 Tesla were attributed to inter-granular flux creep process.