Quantitative magneto-optical investigation of superconductor/ferromagnet hybrid structures
arXiv:1712.03723 · doi:10.1063/1.5016293
Abstract
We present a detailed quantitative magneto-optical imaging study of several superconductor/ferromagnet hybrid structures, including Nb deposited on top of thermomagnetically patterned NdFeB, and permalloy/niobium with erasable and tailored magnetic landscapes imprinted in the permalloy layer. The magneto-optical imaging data is complemented with and compared to scanning Hall probe microscopy measurements. Comprehensive protocols have been developed for calibrating, testing, and converting Faraday rotation data to magnetic field maps. Applied to the acquired data, they reveal the comparatively weaker magnetic response of the superconductor from the background of larger fields and field gradients generated by the magnetic layer.
arXiv comment21 pages, including 2 pages of supplementary material
References in corpus (17)
- Nanoengineered magnetic-field-induced superconductivity
- Nucleation of superconductivity and vortex matter in superconductor - ferromagnet hybrids
- Dendritic magnetic instability in superconducting MgB2 films
- Magnetic properties of submicron Co islands and their use as artificial pinning centers
- High performance hard magnetic NdFeB thick films for integration into Micro-Electro-Mechanical-Systems
- Real time magneto-optical imaging of vortices in superconductors
- Domain wall superconductivity in hybrid superconductor -- ferromagnetic structures
- Optical Manipulation of Single Flux Quanta
- Magnetic Pinning of Vortices in a Superconducting Film: The (anti)vortex-magnetic dipole interaction energy in the London approximation
- Melting of 'porous' vortex matter
- A Scanning Hall Probe Microscope for high resolution, large area, variable height Magnetic Field Imaging
- Magnetic confinement of the superconducting condensate in superconductor/ferromagnet hybrid composites
- A High-Resolution Combined Scanning Laser- and Widefield Polarizing Microscope for Imaging at Temperatures from 4 K to 300 K
- Interaction between superconducting vortices and Bloch wall in ferrite garnet film
- Classical analogy for the deflection of flux avalanches by a metallic layer
- High sensitivity differential Magneto-Optical Imaging with a compact Faradaymodulator
- Magnetization reversal of ferromagnetic nanodisc placed above a superconductor
Cited by in corpus (5)
- Catastrophic magnetic flux avalanches in NbTiN superconducting resonators
- Enhancing the effective critical current density in a Nb superconducting thin film by cooling in an inhomogeneous magnetic field
- Magnetic flux penetration in nanoscale wedge-shaped superconducting thin films
- Dimensional Crossover of Microscopic Magnetic Metasurfaces for Magnetic Field Amplification
- Nanoscale Spatial Tuning of Superconductivity in Cuprate Thin Films via Direct Laser Writing