Abstract
Infrared and ultraviolet absorption spectra arising from f → f and f → d transitions of Ce3+ in YAlO3 crystals are studied by Weber and used to derive the 4f and 5d energy levels. Excitation and fluorescence spectra of 5d → 4f emission are also studied by Weber. From these spectra, the energy-level values for the 5d and 2F7/2 multiplets are deduced, whereas the positions of the energy levels for the 2F5/2 multiplet given by Weber are uncertain. A detailed crystal-field analysis of electronic energy levels of Ce3+ doped in YAlO3 crystals is proposed in this work. The observed crystalline-field splittings of the Ce3+ multiplets were accounted for using a C1h symmetric Hamiltonian. In turn, reliable crystal-field parameters have been obtained. This theoretical analysis confirms the observed crystalline-field splittings of the 5d and 2F7/2 multiplets. The crystalline-field splittings of the 2F5/2 multiplet are deduced.
Published Version
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