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The Construction of a Graphene Hall Effect Magnetometer

Lookup NU author(s): Davut Izci, Dr Carl Dale, Dr Neil Keegan, Dr John Hedley

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This is the authors' accepted manuscript of an article that has been published in its final definitive form by IEEE, 2018.

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Abstract

This paper deals with design and fabrication of graphene micro-Hall devices along with driving and processing electronics to construct a highly sensitive graphene magnetometer system. Graphene micro-Hall elements were fabricated by implementing microfabrication techniques. Custom driving and processing circuitry was designed and built on a printed circuit board (PCB) and integrated with fabricated graphene Hall devices; reducing the offset equivalent magnetic field and greatly improving the sensitivity. The performance parameters were quantitatively analyzed for characterizing the sensitivity in terms of linearity, current-related sensitivity, and magnetic field resolution. The potential of graphene magnetometers for detection capability of low fields has been demonstrated with a current related sensitivity of 2540 V/AT and magnetic field resolution of 162 nT/√Hz.

Publication metadata

Author(s): Izci D, Dale C, Keegan N, Hedley J

Publication type: Article

Publication status: Published

Journal: IEEE Sensors Journal

Year: 2018

Volume: 18

Issue: 23

Pages: 9534-9541

Print publication date: 01/12/2018

Online publication date: 01/10/2018

Acceptance date: 18/09/2018

Date deposited: 09/10/2018

ISSN (print): 1530-437X

ISSN (electronic): 1558-1748

Publisher: IEEE

URL: https://doi.org/10.1109/JSEN.2018.2872604

DOI: 10.1109/JSEN.2018.2872604

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