Overlap and covalent contributions to the crystal field splittings in CaF2:Tm2+

✍ Scribed by F. Anisimov; R. Dagys

• Publisher: John Wiley and Sons
• Year: 1971
• Tongue: English
• Weight: 395 KB
• Volume: 44
• Category: Article
• ISSN: 0370-1972
• DOI: 10.1002/pssb.2220440242

✦ Synopsis

Abstract

The crystal field splittings in CaF~2~:Tm^2+^ were calculated within the framework of the complex (TmF~8~)^6−^. By separating the overlap from covalent contributions, the overlap effects were found to dominate. It is shown that ligand‐ligand overlap effects are important. On the contrary, the role of 5s^2^ 5p^6^ ligand overlap is fairly small. Satisfactory agreement between the values of the splittings calculated and the observed ones is obtained.