DETERMINATION OF SATURATION MAGNETIC-POLARIZATION OF UNIAXIAL MAGNETOCRYSTALLINE ANISOTROPIC MATERIAL FROM LOW-FIELD DATA

A method to determine saturation magnetic polarization of uniaxial mag netocrystalline anisotropic materials from low field data is proposed. The method is applicable for a magnetic particle system in which the magnetization easy axes of particles are aligned. In calculation, the magnetic particles were assumed as noninteracting single domains and t o distribute as a Gaussian function around the alignment direction. In the magnetic system, the particle alignment can be expressed quantita tively by the ratio of remanent polarizations J(r)(perpendicular to)/J (r)(parallel to), and the saturation polarization can be calculated fr om the remanent polarization of the parallel curve and the particle al ignment parameter.