METHOD AND DEVICE FOR ANALYSING MAGNETIC MATERIAL AND ANALYSER HAVING SAID DEVICE Russian patent published in 2012 - IPC G01N15/06 G01N27/72 

FIELD: physics.

SUBSTANCE: method involves magnetisation of material with low-frequency (H_L) and high-frequency (H_H) magnetic fields. Field H_H is characterised by frequency f_H. Signatures of the magnetic material are created from at least two points. Creation of the signatures involves obtaining the value of each point S(H)_P by measuring, over each period, amplitude and phase of the harmonic of the magnetic field which is induced in the magnetic material. The amplitude and phase are obtained only in response to magnetisation during the period of the magnetic field, wherein the harmonic has frequency nf_H, where n is a non-zero positive integer. The mass of the magnetic material is then identified and/or determined on several points of the created signature.

EFFECT: high sensitivity of measurement of magnetic material.

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