METHOD FOR DETERMINING MAGNETIZATION CURVE OF FERROMAGNETIC MATERIAL Russian patent published in 2007 - IPC G01R33/14 

FIELD: technology for measuring alternating magnetic values, possible use for determining and/or building magnetization curves of ferromagnetic materials on "open" samples of simple shape.

SUBSTANCE: method for determining magnetization curve of ferromagnetic material includes magnetization of sample of material in form of cylindrical rod with known relative length in homogeneous side magnetic field with strength H_e, with direction coinciding with axis of body, total magnetic induction B is built in central section of body and dependency B(H_e) is built, strength of internal field is determined from formula H_i and then target material magnetization curve B(H_i) is determined. Magnetization is continued up to magnetic saturation of material, on basis of measured dependency B(H_e) induction of field of magnetic is determined, appropriate for saturation of material B_ms and magnetization of saturation M_s, at given values of B, relative magnetic induction b is determined, and as demagnetization coefficient, central demagnetization coefficient of cylindrical rod N_c is selected, which is determined using a family of calibrating dependencies of coefficients N_c, or their modified values n=N_c/N₀, from b at given values of λ.

EFFECT: simplified procedure of building of said curves, increased precision of building of same and expanded nomenclature of researched materials and products.

2 cl, 4 dwg