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Room temperature scanning Hall probe microscopy using GaAs/AlGaAs and Bi micro-hall probes
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Date
2002-08-12
Author
Sandhu, A
Masuda, H
Oral, Ahmet
Bending, S.J
Yamada, A
Konagi, M
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This work is licensed under a
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
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A room temperature scanning Hall probe microscope system utilizing GaAs/AlGaAs and bismuth micro-Hall probes was used for magnetic imaging of ferromagnetic domain structures on the surfaces of crystalline thin film garnets and permanent magnets. The Bi micro-Hall probes had dimensions ranging between 0.25 and 2.8 mum(2) and were fabricated using a combination of optical lithography and focused ion beam milling. The use of bismuth was found to overcome surface depletion effects associated with semiconducting micro-Hall probes. Our experiments demonstrated that Bi is a practical choice of material for fabricating sub-micron sized Hall sensors.
Subject Keywords
Ferromagnetic domains
,
Hall sensors
,
Nanotechnology
,
Bismuth
,
GaAs
,
Permanent magnetics
,
Garnets
URI
https://hdl.handle.net/11511/41206
Journal
Ultramicroscopy
DOI
https://doi.org/10.1016/s0304-3991(02)00087-6
Collections
Department of Physics, Article