Zero-Field Splitting Parameters of Cr~(3+) in Lithium Potassium Sulphate at Orthorhombic Symmetry Site

摘要

The superposition model is used to investigate the crystal field parameters, B_(kq) of Cr~(3+) in lithium potassium sulphate. The zero field splitting parameters D and E are then determined using microscopic spin Hamiltonian theory and compared with the experimental values obtained by electron paramagnetic resonance. Both zero field splitting parameters D and E evaluated theoretically are in good agreement with the experimental values. The results suggest that the Cr~(3+) ion occupies substitutional K~+ site in lithium potassium sulphate.