Vortex Dynamics in Ferromagnetic/Superconducting Bilayers

• Authors: M. Cieplak , Z. Adamus , M. Kończykowski , L. Zhu , C. Chien
• Languages of publication: EN

Abstracts

EN

The dependence of vortex dynamics on the geometry of magnetic domain pattern is studied in the superconducting/ferromagnetic bilayers, in which niobium is a superconductor, and Co/Pt multilayer with perpendicular magnetic anisotropy serves as a ferrromagnetic layer. Magnetic domain patterns with different density of domains per surface area and different domain size, w, are obtained for Co/Pt with different thickness of Pt. The dense patterns of domains with the size comparable to the magnetic penetration depth (w≥λ) produce large vortex pinning and smooth vortex penetration, while less dense patterns with larger domains (w ≫ λ) enhance pinning less effectively and result in flux jumps during flux motion.

Keywords

EN

74.25.Ha; 74.25.Qt; 74.78.Db; 74.78.Fk

Discipline

• 74.25.Ha: Magnetic properties including vortex structures and related phenomena(for vortices, magnetic bubbles, and magnetic domain structure, see 75.70.Kw)
• 74.78.Fk: Multilayers, superlattices, heterostructures

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2008
• Volume: 114
• Issue: 1
• Pages: 23-28

Dates

published

2008-07

received

2007-11-06

Contributors

author

M. Cieplak

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland

author

Z. Adamus

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland

author

M. Kończykowski

• Laboratoire des Solides Irradiés, CEA/DSM/DRECAM and CNRS-UMR 7642, Ecole Polytechnique, 91128 Palaiseau Cedex, France

author

L. Zhu

• Department of Physics and Astronomy, The Johns Hopkins University, Baltimore, Md 21218, USA

author

C. Chien

• Department of Physics and Astronomy, The Johns Hopkins University, Baltimore, Md 21218, USA

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Identifiers

DOI

10.12693/APhysPolA.114.23