Premium
Colour Centres in Alkali Metal Doped CaF 2
Author(s) -
Hamaïdia A.,
Hachimi A.
Publication year - 1988
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221490236
Subject(s) - magnetic circular dichroism , paramagnetism , alkali metal , doping , spectral line , ground state , absorption (acoustics) , wavelength , chemistry , spectroscopy , absorption spectroscopy , metal , emission spectrum , materials science , crystallography , atomic physics , physics , optics , condensed matter physics , optoelectronics , quantum mechanics , astronomy , organic chemistry
Using optical spectroscopy and magnetic circular dichroism (MCD) colour centres are studied in CaF 2 :Li + and CaF 2 :Na + . In each of these two matrices, there exists a weakly perturbed F A centre which is called F A (1)and probably a more deeply perturbed F A centre or F A (2) ; the centre which is improperly named F 2A has a paramagnetic ground state, its MCD is very different from that of the F 2 centre in pure CaF 2 ; there are two non‐paramagnetic centres “F 3A + ” and f with similar optical and magneto‐optical properties but with a long wavelengths shift of the absorption and emission spectra of the f centre.