Flux Pinning by Magnetic Bubble Domains

Flux pinning is investigated in a thin type-II superconducting film covering a ferromagnetic Co/Pt film with perpendicular anisotropy. Stable bubble domains with varying size and density can be created in the ferromagnet by means of different magnetization procedures. The flux pinning is strongly depending on this magnetic domain structure, resulting in asymmetric magnetization curves with respect to the field polarity.

[1]  F. Peeters,et al.  Vortex structure of thin mesoscopic disks in the presence of an inhomogeneous magnetic field , 2002 .

[2]  V. Moshchalkov,et al.  Magnetic-domain-controlled vortex pinning in a superconductor/ferromagnet bilayer , 2002, cond-mat/0205470.

[3]  J. Swerts,et al.  Pinning of domain walls and flux lines in a nanostructured ferromagnet/superconductor bilayer , 2002 .

[4]  V. Moshchalkov,et al.  Nanostructured Superconductor/Ferromagnet Bilayers , 2002, cond-mat/0201302.

[5]  S. Erdin,et al.  Topological textures in a ferromagnet-superconductor bilayer. , 2001, Physical review letters.

[6]  G. Xiong,et al.  Enhanced flux pinning in a high-TC superconducting film by a ferromagnetic buffer layer , 2001 .

[7]  I. P. Nikitin,et al.  Pinning of vortices by the domain structure in a two-layered type II superconductor-ferromagnet system , 2001 .

[8]  Yu. I. Bespyatykh,et al.  The spontaneous formation of a vortex structure in a type II superconductor-ferromagnet bilayer , 2001 .

[9]  J. Swerts,et al.  Asymmetric flux pinning in laterally nanostructured ferromagnetic/superconducting bilayers , 2000, cond-mat/0012428.

[10]  Howells,et al.  Local Observation of Field Polarity Dependent Flux Pinning by Magnetic Dipoles. , 2001, Physical review letters.

[11]  M. Varela,et al.  Enhanced pinning in a magnetic-superconducting bilayer , 2000 .

[12]  E. Chudnovsky,et al.  Magnetic pinning in superconductor-ferromagnet multilayers , 2000 .

[13]  J. Bekaert,et al.  Flux pinning by regular arrays of ferromagnetic dots , 1999, cond-mat/9911033.

[14]  K. Temst,et al.  MAGNETIC PROPERTIES OF SUBMICRON CO ISLANDS AND THEIR USE AS ARTIFICIAL PINNING CENTERS , 1999, cond-mat/9911034.

[15]  J. Ketterson,et al.  Asymmetric flux pinning in a regular array of magnetic dipoles , 1998 .

[16]  I. Schuller,et al.  Flux Pinning in a Superconductor by an Array of Submicrometer Magnetic Dots , 1997 .

[17]  J. Nozieres,et al.  Magnetostatic interactions between magnetic arrays and superconducting thin films , 1993 .

[18]  W. B. Zeper,et al.  Perpendicular magnetic anisotropy and magneto-optical Kerr effect of vapor-deposited Co/Pt-layered structures , 1989 .