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Soft-magnetic coatings as possible sensors for magnetic imaging of superconductors

2019

Article

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Magnetic imaging of superconductors typically requires a soft-magnetic material placed on top of the superconductor to probe local magnetic fields. For reasonable results the influence of the magnet onto the superconductor has to be small. Thin YBCO films with soft-magnetic coatings are investigated using SQUID magnetometry. Detailed measurements of the magnetic moment as a function of temperature, magnetic field and time have been performed for different heterostructures. It is found that the modification of the superconducting transport in these heterostructures strongly depends on the magnetic and structural properties of the soft-magnetic material. This effect is especially pronounced for an inhomogeneous coating consisting of ferromagnetic nanoparticles.

Author(s): Ionescu, A.M. and Simmendinger, J. and Bihler, M. and Miksch, C. and Fischer, P. and Soltan, S. and Schütz, G. and Albrecht, J.
Journal: Supercond. Sci. and Tech.
Volume: 33
Pages: 015002
Year: 2019
Month: December
Day: 6
Publisher: IOP

Department(s): Micro, Nano, and Molecular Systems, Modern Magnetic Systems
Bibtex Type: Article (article)
Paper Type: Journal

DOI: https://doi.org/10.1088/1361-6668/ab5984
URL: https://iopscience.iop.org/article/10.1088/1361-6668/ab5984

BibTex

@article{Ionescu2019,
  title = {Soft-magnetic coatings as possible sensors for magnetic imaging of superconductors},
  author = {Ionescu, A.M. and Simmendinger, J. and Bihler, M. and Miksch, C. and Fischer, P. and Soltan, S. and Sch{\"u}tz, G. and Albrecht, J.},
  journal = {Supercond. Sci. and Tech.},
  volume = {33},
  pages = {015002},
  publisher = {IOP},
  month = dec,
  year = {2019},
  url = {https://iopscience.iop.org/article/10.1088/1361-6668/ab5984},
  month_numeric = {12}
}