Advertisement

Intermittent Flux Penetration at Different Temperatures in YBa2Cu3O7−x on NdGaO3 Substrates

  • Atle Jorstad Qviller
  • Vitaliy Yurchenko
  • Jørn Inge Vestgården
  • Tom Henning Johansen
  • Yuri Galperin
  • Peter B. Mozhaev
  • Julia E. Mozhaeva
  • Jørn Bindslev Hansen
  • Claus Schelde Jacobsen
Open Access
Original Paper

Abstract

In type-II superconductors, increasing applied magnetic field penetrates gradually in the form of magnetic vortices. It is of great interest to understand the dynamics of magnetic flux in different superconducting materials, as this phenomenon can severely limit the performance of superconductors in applications. YBa2Cu3O7−x (YBCO) is an important high-temperature superconductor, but until recently, it has been hard to make wires from it due to misalignment of superconducting grains. A solution to this problem is to deposit YBCO on vicinal substrates to better align the grains. Some of these samples show a strongly intermittent flux penetration at low temperatures. In this work, we have studied flux penetration in YBCO deposited on a 14° vicinal substrate of NdGaO3 (NGO) at different temperatures.

Keywords

Flux avalanches Thermomagnetic instability Magneto-optical imaging Miscut substrate Vicinal substrate 

References

  1. 1.
    Jooss, Ch., Warthmann, R., Kronmuller, H.: Phys. Rev. B 61, 18 (2000) CrossRefGoogle Scholar
  2. 2.
    Tafuri, F., et al.: Physica C 326, 63 (1999) CrossRefADSGoogle Scholar
  3. 3.
    Mozhaev, P.B., et al.: Physica C 435, 23 (2006) CrossRefADSGoogle Scholar

Copyright information

© The Author(s) 2010

Authors and Affiliations

  • Atle Jorstad Qviller
    • 1
  • Vitaliy Yurchenko
    • 1
  • Jørn Inge Vestgården
    • 1
  • Tom Henning Johansen
    • 1
  • Yuri Galperin
    • 1
  • Peter B. Mozhaev
  • Julia E. Mozhaeva
  • Jørn Bindslev Hansen
    • 2
  • Claus Schelde Jacobsen
    • 2
  1. 1.Department of PhysicsUniversity of OsloOsloNorway
  2. 2.Department of PhysicsTechnical University of DenmarkKgs.LyngbyDenmark

Personalised recommendations