CRYSTAL FIELD MATRIX ELEMENTS FOR TRANSITION-METAL AND RARE-EARTH IONS

Author Institution: RCA Laboratories“The Hamiltonian of an ion in a crystal lattice may be considered as the sum of two terms, the free-ion Hamiltonian and the crystal potential \[ H=H_{i}+Ve. \] The free-ion Hamiltonian is invariant under rotation while $V_{e}$ has the lower symmetry of th