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Updated: Aug 7, 2026

Frequency Mixing Magnetic Detection Scanner for Imaging Magnetic Particles in Planar Samples
Published on: June 9, 2016
Note: Evaluation of magnetometry data acquired from elongated samples
M E Hayden1, V Lambinet2, S Gomis1
1Department of Physics, Simon Fraser University, Burnaby, British Columbia V5A 1S6, Canada.
Abstract:
We document and validate an analytic expression for the flux integral characterizing the response (or sensitivity) of a magnetometer equipped with second-order axial gradiometer coils to long, thin, uniformly magnetized samples. We then demonstrate an application inspired by this analysis, in which magnetometric sensitivity to weak magnetic signatures is readily and appreciably enhanced by increasing the sample volume (and hence the quantity of analyte) well beyond conventional limits.
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