NDLI: Noise Behavior of High Sensitive GMI-Based Magnetometer Relative to Conditioning Parameters

Content Provider	IEEE Xplore Digital Library
Author	Portalier, E. Dufay, B. Saez, S. Dolabdjian, C.
Copyright Year	1965
Abstract	The lowest measurable magnetic field of a high sensitive magnetometer based on giant magnetoimpedance (GMI) effect will be determined by its noise level. Numerous previous works have showed that the equivalent magnetic noise level of GMI magnetometer presents a 1/f behavior at low frequencies and a white noise. Currently, performances of the magnetometer are still limited by the electronic conditioning as well as the intrinsic equivalent magnetic noise of the GMI sensor. To improve sensor performances, particularly at low frequency, we have investigated two focuses on research: 1) reduce the electronic noise of the conditioning electronic by increasing the voltage sensitivity, in units of V/T and 2) reduce the intrinsic equivalent low frequency sensor noise. As previously reported, the equivalent magnetic noise at 1 Hz can be reduced by increasing the excitation current in addition to a dc bias current. By working on these bias conditions, on the given samples, we almost 1 pT/√Hz in white noise region and 15 pT/√Hz at 1 Hz.
Sponsorship	IEEE Magnetics Society
Starting Page	1
Ending Page	4
Page Count	4
File Size	649299
File Format	PDF
ISSN	00189464
Volume Number	51
Issue Number	1
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Magnetometers Magnetic noise Sensitivity White noise Current measurement Impedance off-diagonal giant magnetoimpedance (GMI) magnetometer
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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Impact of Electronic Conditioning on the Noise Performance of a Two-Port Network Giant MagnetoImpedance Magnetometer

Development of a High Sensitivity Giant Magneto-Impedance Magnetometer: Comparison With a Commercial Flux-Gate

Characterization of an Optimized Off-Diagonal GMI-Based Magnetometer

Low frequency excess noise source investigation of off-diagonal GMI-based magnetometers

Equivalent Magnetic Noise Limit of Low-Cost GMI Magnetometer

Noise Behavior of High Sensitive GMI-Based Magnetometer Relative to Conditioning Parameters

Electronic approach for enhancing impedance phase sensitivity of GMI magnetic sensors

Influence of current amplitude on asymmetric off-diagonal magnetoimpedance in field-annealed amorphous ribbons

Optimized off-diagonal GMI-based magnetometer

Noise Behavior of High Sensitive GMI-Based Magnetometer Relative to Conditioning Parameters

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Impact of Electronic Conditioning on the Noise Performance of a Two-Port Network Giant MagnetoImpedance Magnetometer

Development of a High Sensitivity Giant Magneto-Impedance Magnetometer: Comparison With a Commercial Flux-Gate

Characterization of an Optimized Off-Diagonal GMI-Based Magnetometer

Low frequency excess noise source investigation of off-diagonal GMI-based magnetometers

Equivalent Magnetic Noise Limit of Low-Cost GMI Magnetometer

Noise Behavior of High Sensitive GMI-Based Magnetometer Relative to Conditioning Parameters

Electronic approach for enhancing impedance phase sensitivity of GMI magnetic sensors

Influence of current amplitude on asymmetric off-diagonal magnetoimpedance in field-annealed amorphous ribbons

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