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Updated: Jun 20, 2026

Frequency Mixing Magnetic Detection Scanner for Imaging Magnetic Particles in Planar Samples
Published on: June 9, 2016
M-H loop tracer based on digital signal processing for low frequency characterization of extremely thin magnetic
1Department of Measurement, Faculty of Electrical Engineering, Czech Technical University in Prague, Prague 16627, Czech Republic.
Abstract:
A high-sensitivity ac hysteresis loop tracer has been developed to measure the low frequency hysteresis loop of soft magnetic materials. It has been applied successfully to characterize straight pieces of amorphous glass-covered microwires with metallic nucleus down to 1.5 microm thick. Based on the electromagnetic induction law, the proposed design is extremely simple and exploits the capabilities of commercially available data acquisition cards together with digital signal processing in order to achieve high-sensitivity without the need of expensive analog equipment.
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