Crystal-field analysis of Cr3+ in grossular Ca3Al2(SiO4)3

✍ Scribed by M. Czaja; Z. Mazurak

• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 315 KB
• Volume: 3
• Category: Article
• ISSN: 0925-3467
• DOI: 10.1016/0925-3467(94)90012-4

✦ Synopsis

The optical absorptionand luminescence spectra ofCr 3 + in Ca 3A12 (SiO,~) natural garnet (Grossular) measured at room and LHeT were reported the first time in Mazurak [Opt. Mater., this issue]. The spectra have been used for determined energies of R2, R1, ZPL, vibrational modes and 2E, 4T 2, 4T 1 levels. We have extended our investigations, the spectra ofCr~in Ca3A12(SiO4)3 are analyzed using a C31 crystal-field Hamiltonian. The energy levels and the crystal-field parameters Ba,,, for Cr 3" ion in Ca 3AI2(Si04)3 single crystal, including spin-orbit and ligand-field interactions, have been calculated. The resulting crystal-field parameters B,,,, represent very well the crystal-field interactions ofCr 3~in Grossular Ca 3A12(SiO4)3.