Li, P, Collomb, D, Lim, ZJ et al. (4 more authors) (2022) High resolution magnetic microscopy based on semi-encapsulated graphene Hall sensors. Applied Physics Letters, 121 (4). 043502. ISSN 0003-6951
Abstract
The realization of quantitative, noninvasive sensors for ambient magnetic imaging with high spatial and magnetic field resolution remains a major challenge. To address this, we have developed a relatively simple process to fabricate semi-encapsulated graphene/hBN Hall sensors assembled by dry transfer onto pre-patterned gold contacts. 1 lm-sized Hall cross sensors at a drive current of 0.5 lA exhibit excellent room temperature sensitivity, SI 700 V/AT, and good minimum detectable fields, Bmin ¼ 0.54 G/Hz0.5 at a measurement frequency of 1 kHz, with considerable scope for further optimization of these parameters. We illustrate their application in an imaging study of labyrinth magnetic domains in a ferrimagnetic yttrium iron garnet film.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2022 Author(s). This is an open access article under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits unrestricted use, distribution and reproduction in any medium, provided the original work is properly cited. |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Physics and Astronomy (Leeds) > Condensed Matter (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 22 Feb 2023 14:56 |
Last Modified: | 22 Feb 2023 14:56 |
Status: | Published |
Publisher: | American Institute of Physics |
Identification Number: | 10.1063/5.0097936 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:196674 |