Absorption spectra of Tl+-doped KMgF3 single crystals have been measured at various temperatures between 9 and 300 K in the V.u.v. region. Three main bands are found, and they are labelled A, B, C in order of increasing energy because of their close similarities to those of Tl+ ions in alkali halides. The most striking novelty in KMgF3:Tl+ is given by the clearly resolved structures of the A and C bands, which both exhibit three components at all temperatures. These structures are related to the Jahn-Teller splitting, due to the interaction of the impurity ion with non-cubic lattice vibrations, and to a static distortion of the host lattice.
Scacco, A., Fioravanti, S., Missori, M., Grassano, U.m., Luci, A., Palummo, M., et al. (1993). Optical absorption of Tl+ ions in KMgF3 crystals. JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 54(9), 1035-1041.
Optical absorption of Tl+ ions in KMgF3 crystals
PALUMMO, MAURIZIA;
1993-01-01
Abstract
Absorption spectra of Tl+-doped KMgF3 single crystals have been measured at various temperatures between 9 and 300 K in the V.u.v. region. Three main bands are found, and they are labelled A, B, C in order of increasing energy because of their close similarities to those of Tl+ ions in alkali halides. The most striking novelty in KMgF3:Tl+ is given by the clearly resolved structures of the A and C bands, which both exhibit three components at all temperatures. These structures are related to the Jahn-Teller splitting, due to the interaction of the impurity ion with non-cubic lattice vibrations, and to a static distortion of the host lattice.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
