Optical Zeeman spectroscopy of the lowest doublet excited states of t r i s(acetylacetonato)chromium(III)

The three principal phosphorescent bands of Cr3+ (1%)/tris(acetylacetonato)aluminium(III) single crystals at 1.8 K, have been examined at field strengths of 0–5.7 T in various orientations. The principal g values of the corresponding doublet excited states are determined to lie in the ranges ‖g∥ ‖:1.4–1.7, ‖g⊥ ‖:1.8–2.0, in marked contrast to those of the inorganic analogue, ruby.