Method and device for measuring local non-destructive and of the pharmacological genesis of a magnetic material

摘要

The present invention relates to a method of determination of the electromagnetic properties of a magnetic material, by means of a device comprising two points of measurement and two excitation points, and a field sensor placed in the vicinity of said material, characterized in that it comprises the following steps: - the application of a magnetic polarization h1 to the material by means of a polarization, - an imposition of an excitation signal of current i on the material by means of the two tips exciter - a measurement of the field h by the sensor of a field, - a measurement of the potential difference u by the two points of measurement, - determination of the permeability μ for a zone of polarization is centered around the magnetic polarization h1 and - a modification of the polarization h1 applied and a repetition of the steps 2 to 5.