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Optimized Setup and Protocol for Magnetic Domain Imaging with In Situ Hysteresis Measurement

Optimized Setup and Protocol for Magnetic Domain Imaging with In Situ Hysteresis Measurement

Published on: November 7, 2017

Minimizing crosstalk in three-axial induction magnetometers.

Asaf Grosz¹, Eugene Paperno, Shai Amrusi

¹Department of Electrical and Computer Engineering, Ben-Gurion University of the Negev, 84105 Beer-Sheva, Israel.

The Review of Scientific Instruments

|January 5, 2011

Summary

This study models and verifies crosstalk in three-axial induction magnetometers. Minimizing crosstalk is crucial for magnetometer accuracy, especially near resonance frequencies.

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Area of Science:

Physics
Electrical Engineering
Instrumentation

Background:

Crosstalk is an inherent issue in three-axial induction magnetometers.
Understanding crosstalk is vital for improving magnetometer accuracy.

Purpose of the Study:

To develop and experimentally verify a theoretical model for crosstalk in three-axial induction magnetometers.
To analyze the impact of crosstalk on magnetometer accuracy.

Main Methods:

Theoretical modeling of crosstalk in transverse coils.
Experimental verification of the developed model.
Analysis of crosstalk components and their frequency dependence.

Main Results:

Crosstalk has two components: applied magnetic flux and secondary flux.
Crosstalk magnitude and phase vary significantly with frequency, peaking at resonance.
Magnetic feedback can reduce crosstalk but increases the minimum crosstalk value.

Conclusions:

Crosstalk significantly affects magnetometer accuracy, particularly around resonance.
Magnetic feedback offers a method to manage crosstalk but has trade-offs.
Low crosstalk is beneficial for both narrow and wide-band magnetometer applications.