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Luminescence et résonance paramagnétique de l'ion Mn 2+ dans le luminophore MgS
Author(s) -
Asano S.,
Yamashita N.,
Nakao Y.,
Matsushima Y.
Publication year - 1981
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.2221080127
Subject(s) - luminophore , spectral line , excitation , ion , analytical chemistry (journal) , phosphor , luminescence , atomic physics , chemistry , materials science , physics , optics , nuclear physics , chromatography , quantum mechanics , astronomy , organic chemistry
ESR spectra and emission and excitation spectra of the MgS:Mn 2+ phosphor are measured at 6, 80, and 300 K. From ESR spectra the values of the parameters g and A are obtained: g = 2.0019 and A = −74.8 × 10 −4 cm −1 at 300 K. Furthermore, the analysis of the excitation spectra leads to the values B = 631 cm −1 , C = 3345 cm −1 , and Dq = 817 cm −1 with covalency parameter ϵ = 0.044. The value of the cubic field parameter a estimated from the shape of ESR spectra is much smaller than that theoretically deduced from the observed value of the parameter Dq .