Magnetomodulation Sensors Based on Amorphous Ferromagnetic Alloys

Resumo

The characteristics of magnetomodulation sensors of magnetic flux density with autoparametric amplification of the signal in amorphous ferromagnetic cores are considered. It is shown that, by comparison with ferromagnetic probes (fluxgate devices), such sensors possess a lower level of magnetic noise at low frequencies, though greater zero instability in the measurement of a static magnetic field. Ways of improving the metrological characteristics of the sensors are proposed.