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Magnesium Colour Centres in NaF
Author(s) -
Egranov A. V.,
Nepomnyachikh A. I.
Publication year - 1984
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.2221220129
Subject(s) - magnesium , excitation , luminescence , magnesium fluoride , atom (system on chip) , irradiation , spectral line , emission spectrum , sodium , absorption (acoustics) , chemistry , optical spectra , atomic physics , materials science , physics , optoelectronics , metallurgy , quantum mechanics , astronomy , computer science , nuclear physics , composite material , embedded system
The absorption, emission, excitation spectra, and polarized luminescence of magnesium centres in sodium fluoride are studied. Three types of magnesium centres are observed. The first one, which is produced by X‐irradiation at 300 K and absorbs at 3.32 eV, is attributed to the Mg c + centre. The two other centres have the electronic structure of the Mg 0 atom perturbed by lattice defects. Optical excitation of the Mg 0 type centres leads to two emission bands, which are attributed to the 3 P 1 → → 1 S 0 and 1 P 1 → 1 S 0 transitions. However, the structure of both of these centres are not still completly established.