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Similarity of Ground‐ and Excited‐State Absorption Spectra of Cr 3+ Ions in a Strong Crystal Field
Author(s) -
Veremeichik T. F.
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.2221240231
Subject(s) - excited state , ground state , ion , atomic physics , crystal (programming language) , field (mathematics) , spectral line , absorption spectroscopy , tetrahedral symmetry , absorption (acoustics) , similarity (geometry) , electron , symmetry (geometry) , physics , chemistry , optics , quantum mechanics , geometry , artificial intelligence , computer science , mechanics , pure mathematics , image (mathematics) , programming language , rotational symmetry , mathematics
A comparative analysis of the broad bands of the ground‐ and excited‐state absorption spectra of d 3 ‐impurity ions iscarried out in a point‐ion crystal field theory model. It is found that for d 3 electrons in the cubic field (d 7 in tetrahedral field) a similarity of these bands should be expected. The similarity results from the particular symmetry of the initial terms of the compared transitions (these terms correspond to the t 3 2 half‐filled shell of the strong cubic field) and from the same orbital symmetry ofthe final state wave functions. Theoretical conclusions are applied to the experimental spectra of Cr 3+ ions in ruby, emerald, and MgO. The use of the similarity of ground‐ and excited‐absorption spectra is suggested. The same analysis is carried out for the d 2 configuration as well.