IEEE Transactions on Applied Superconductivity · 1993 · 66 citations · 6 references
Natural SciencesElectrical EngineeringPhysicsCondensed Matter PhysicsMagnetic MaterialsOpticsInterferometrySuperconducting MaterialsDetector Spatial ResolutionMagnetic MicroscopyQuantum InterferenceSpatial Resolution MeasurementSuperconducting DetectorsSuperconducting Quantum Interference Device MagnetometryVortex Core StructureVortex Structure
A cryogenic two-dimensional magnetic imaging system that incorporates a sensitive DC superconducting quantum interference device (SQUID) detector is described. In this instrument, which is called the scanning SQUID microscope, a flux transformer coupled to the SQUID is scanned over the surface of a planar sample by a room-temperature, stepping-motor-controlled manipulator with a positional resolution of about 2 mu m. With the present input coil, spatial resolution of 20 mu m and a flux sensitivity at the sample of 10/sup -5/ Phi /sub 0//Hz/sup 1/2/ is attainable. This system has been designed specifically to image the vortex structure and dynamics of weakly coupled superconductor arrays.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
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Magnetic imaging by ‘‘force microscopy’’ with 1000 Å resolution
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On Inhomogeneities in the Magnetization of Ferromagnetic Materials
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Observation of Magnetic Domains by the Kerr Effect
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