Temperature dependence of magnetocrystalline anisotropy energy and saturation magnetization of GdNi single crystal

摘要

The temperature dependence of the magnetocrystalline anisotropy energy and saturation magnetization was measured in single crystals of GdNi. Anisotropy constants K1 and K3 are estimated to be K1 = 4.0×106 erg/cm3 and K3 = -2.7×106 erg/cm3. It was found that the torque is proportional to the square of the magnetization for the GdNi compound. The microscopic origins of the anisotropy energy are discussed.