Parallel array of planar Hall effect sensors for high resolution magnetometry

Hariharan Nhalil; Moty Schultz; Shai Amrusi; Asaf Grosz; Lior Klein

doi:10.1063/5.0151569

Parallel array of planar Hall effect sensors for high resolution magnetometry

Hariharan Nhalil
, Moty Schultz
, Shai Amrusi
, Asaf Grosz
, Lior Klein

Department of Electrical & Computer Engineering

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

We introduce a planar Hall effect magnetometer in the form of a parallel array of permalloy-based elliptical sensors. The number of ellipses in the array and other fabrication parameters are optimized with the support of numerical simulations. We obtain equivalent magnetic noise (EMN) of 16 pT/Hz at 100 Hz, 25 pT/Hz at 10 Hz, 98 pT/Hz at 1 Hz, and 470 pT/Hz at 0.1 Hz. The exceptional EMN without the use of magnetic flux concentrators highlights the advantages of the design. The presented magnetometer, characterized by its simplicity, affordability, and ability to operate at room temperature, is anticipated to be useful for applications requiring pT resolution.

Original language	English
Article number	204501
Journal	Journal of Applied Physics
Volume	133
Issue number	20
DOIs	https://doi.org/10.1063/5.0151569
State	Published - 28 May 2023

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General Physics and Astronomy

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10.1063/5.0151569

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title = "Parallel array of planar Hall effect sensors for high resolution magnetometry",

abstract = "We introduce a planar Hall effect magnetometer in the form of a parallel array of permalloy-based elliptical sensors. The number of ellipses in the array and other fabrication parameters are optimized with the support of numerical simulations. We obtain equivalent magnetic noise (EMN) of 16 pT/Hz at 100 Hz, 25 pT/Hz at 10 Hz, 98 pT/Hz at 1 Hz, and 470 pT/Hz at 0.1 Hz. The exceptional EMN without the use of magnetic flux concentrators highlights the advantages of the design. The presented magnetometer, characterized by its simplicity, affordability, and ability to operate at room temperature, is anticipated to be useful for applications requiring pT resolution.",

author = "Hariharan Nhalil and Moty Schultz and Shai Amrusi and Asaf Grosz and Lior Klein",

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T1 - Parallel array of planar Hall effect sensors for high resolution magnetometry

AU - Nhalil, Hariharan

AU - Schultz, Moty

AU - Amrusi, Shai

AU - Grosz, Asaf

AU - Klein, Lior

PY - 2023/5/28

Y1 - 2023/5/28

N2 - We introduce a planar Hall effect magnetometer in the form of a parallel array of permalloy-based elliptical sensors. The number of ellipses in the array and other fabrication parameters are optimized with the support of numerical simulations. We obtain equivalent magnetic noise (EMN) of 16 pT/Hz at 100 Hz, 25 pT/Hz at 10 Hz, 98 pT/Hz at 1 Hz, and 470 pT/Hz at 0.1 Hz. The exceptional EMN without the use of magnetic flux concentrators highlights the advantages of the design. The presented magnetometer, characterized by its simplicity, affordability, and ability to operate at room temperature, is anticipated to be useful for applications requiring pT resolution.

AB - We introduce a planar Hall effect magnetometer in the form of a parallel array of permalloy-based elliptical sensors. The number of ellipses in the array and other fabrication parameters are optimized with the support of numerical simulations. We obtain equivalent magnetic noise (EMN) of 16 pT/Hz at 100 Hz, 25 pT/Hz at 10 Hz, 98 pT/Hz at 1 Hz, and 470 pT/Hz at 0.1 Hz. The exceptional EMN without the use of magnetic flux concentrators highlights the advantages of the design. The presented magnetometer, characterized by its simplicity, affordability, and ability to operate at room temperature, is anticipated to be useful for applications requiring pT resolution.

UR - https://www.scopus.com/pages/publications/85160588484

U2 - 10.1063/5.0151569

DO - 10.1063/5.0151569

M3 - Article

AN - SCOPUS:85160588484

SN - 0021-8979

VL - 133

JO - Journal of Applied Physics

JF - Journal of Applied Physics

IS - 20

M1 - 204501

ER -

Parallel array of planar Hall effect sensors for high resolution magnetometry

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