THE MEASUREMENT OF DIFFERENTIAL SUSCEPTIBILITY, MAGNETOCRYSTALLINE ANISOTROPY AND SATURATION MAGNETIZATION OF GRAIN ORIENTED FeSi-STEEL

Abstract A new method for detecting the initial susceptibility of ferromagnetic materials by recording an induced voltage is described and applied to measurements on grain oriented silicon steel. The significantly different results in dependence of the initial susceptibility on the crystallographic directions can be interpreted by the magnetization process and are compared with the ascent of quasistationary M/H-virgin curves recorded under the same conditions. Using 25 cm Epstein squares, the determination of magnetocrystalline anisotropy constants and the measurement of saturation magnetization can be achieved with high accuracy and reproducibility at strong de-fields.