Spectra of interconfiguration 4/ital f/ /sup 8/---4/ital f/ /sup 7/5/ital d/ transitions of Tb/sup 3+/ ions in phosphate glasses

Journal Article · Sat Oct 01 04:00:00 EDT 1988 · Opt. Spectrosc. (Engl. Transl.); (United States)

OSTI ID:5939629

Arbuzov, V I; Grabovskis, V Y; Kovaleva, N S; Rogulis, U T; Tolstoi, M N

The spectra of interconfiguration 4/ital f/ /sup 8/---4/ital f/ /sup 7/5/ital d/ transitions of Tb/sup 3+/ ions in glassy metaphosphates of alkali and alkaline earth elements were studied by the procedures of luminescence and absorption spectroscopy. In the given spectra three groups of broad bands in the 56000, 46000, and 39000-cm/sup /minus/1/ regions are observed. The character of the Stark structure of the bands of /ital f/---/ital d/ transitions is satisfactorily explained assuming that Tb/sup 3+/ ions are located in a field of cubic symmetry with a small contribution of a low-symmetry component. An analysis of the relative band intensities and qualitative construction of a possible term diagram of the 4/ital f/ /sup 7/5/ital d/ configuration permits assuming that the bands in the 56000 and 46000-cm/sup /minus/1/ regions are due to allowed transitions, and the bands in the 39000-cm/sup /minus/1/ region to spin-forbidden interconfiguration 4/ital f/ /sup 8//r arrow/4/ital f/ /sup 7/5/ital d/ transitions. It was established that the second coordination sphere, in which cations of the modifiers are contained, exerts an effect on the spectral characteristics of /ital f/---/ital d/ transitions of Tb/sup 3+/ ions.

• OSTI ID: 5939629
• Journal Information: Opt. Spectrosc. (Engl. Transl.); (United States), Journal Name: Opt. Spectrosc. (Engl. Transl.); (United States) Vol. 65:4; ISSN OPSUA
• Country of Publication: United States
• Language: English

Related Subjects

640302* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
ABSORPTION SPECTRA
CHARGED PARTICLES
ELECTRONIC STRUCTURE
EMISSION SPECTRA
ENERGY-LEVEL TRANSITIONS
FORBIDDEN TRANSITIONS
GLASS
IONS
PHOSPHATE GLASS
SPECTRA
STARK EFFECT
TERBIUM IONS