The calculation of spin energy level and wave function of electron for Cr3+ in K3[Cr(CN)6]

The calculation of the splitting of energy level of the Cr3+ in K3[Cr(CN)6] is presented under the external magnetic field H acting around the axes (x, y, z) of lattice field. The simultaneous calculating method for the energy level and the wave function was shown under the external magnetic field H acting around the axes (a, b, c) of cryatal. The calculating process is reduced and the amount of work is decreased. And this method ensures that the perpendicular and unitary conditions of the obtained wave-function can be satisfied. This method may be extended to the calculation of other similar question