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Novel Hall sensors developed for magnetic field imaging systems
Journal article   Peer reviewed

Novel Hall sensors developed for magnetic field imaging systems

Vladimír Cambel, Goran Karapetrov, Valentyn Novosad, Elena Bartolomé, Dagmar Gregušová, Ján Fedor, Robert Kúdela, Ján Šoltýs and Argonne National Lab. (ANL), Argonne, IL (United States)
Journal of magnetism and magnetic materials, v 316(2), pp 232-235
2007

Abstract

Hall sensor Magnetic domain structure Scanning Hall probe microscopy Semiconductor heterostructure YBCO superconducting tape
We report here on the fabrication and application of novel planar Hall sensors based on shallow InGaP/AlGaAs/GaAs heterostructure with a two-dimensional electron gas (2DEG) as an active layer. The sensors are developed for two kinds of experiments. In the first one, magnetic samples are placed directly on the Hall sensor. Room temperature experiments of permalloy objects evaporated onto the sensor are presented. In the second experiment, the sensor scans close over a multigranular superconducting sample prepared on a YBCO thin film. Large-area and high-resolution scanning experiments were performed at 4.2 K with the Hall probe scanning system in a liquid helium flow cryostat.

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Collaboration types
Domestic collaboration
International collaboration
Web of Science research areas
Materials Science, Multidisciplinary
Physics, Condensed Matter
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