Superconducting Pinning by Magnetic Domains in a Ferromagnet-Superconductor Bilayer

The local flux profile and the critical current are studied using an array of Hall sensors in a ferromagnetic-superconducting bilayer which consists of niobium film covering ferromagnetic Co/Pt multilayer with perpendicular magnetic anisotropy. The results indicate about threefold enhancement of the...

Full description

Saved in:
Bibliographic Details
Published inActa physica Polonica, A Vol. 106; no. 5; pp. 693 - 698
Main Authors Cieplak, M.Z., Adamus, Z., Konczykowski, M., Chen, X.M., Byczuk, A., Abal'oshev, A., Sang, H., Chien, C.L.
Format Journal Article
LanguageEnglish
Published Polish Academy of Sciences. Institute of Physics 01.11.2004
Online AccessGet full text

Cover

More Information
Summary:The local flux profile and the critical current are studied using an array of Hall sensors in a ferromagnetic-superconducting bilayer which consists of niobium film covering ferromagnetic Co/Pt multilayer with perpendicular magnetic anisotropy. The results indicate about threefold enhancement of the flux pinning in niobium layer caused by the isolated magnetic domains which are created during the magnetization reversal of the Co/Pt multilayer. The geometrical barrier is absent, and the critical current is strongly peaked in close vicinity to the sample center, suggesting that the critical state differs from that predicted by the Bean model
ISSN:0587-4246
1898-794X
DOI:10.12693/APhysPolA.106.693