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The Effect of Volume‐Change‐Induced Stresses on the Morphological Stability of the Interface Boundary in a Ternary Diffusion Couple
Author(s) -
Parrot R.,
Boulanger D.
Publication year - 1997
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 - 10.1002/1521-3951(199706)201:2<405::aid-pssb405>3.0.co;2-6
Subject(s) - spin–orbit interaction , ion , fluorescence , lattice (music) , chemistry , coupling (piping) , ligand field theory , angular momentum , atomic physics , condensed matter physics , molecular physics , physics , materials science , quantum mechanics , acoustics , metallurgy , organic chemistry
The first‐order spin–orbit (SO) interaction for the fluorescent 4 T 1 ‐levels of Mn 2+ in the common cation series ZnX (X: S, Se, Te) has been calculated by using the molecular SO interaction H SO mol and a very elaborated ligand‐field (LF) model. With respect to the splittings predicted by the crystal‐field (CF) model, the first‐order SO splittings are very strongly reduced for Mn in ZnS, while for Mn in ZnSe and ZnTe, the splittings are inversed and strongly enhanced. A theoretical check of the validity of the LF model is performed by relating the matrix elements of the total angular momentum for the monoelectronic wave functions 2e and 2t 2 which intervene in the calculation of the matrix elements of the first‐order SO interaction to those which intervene in the calculation of the spin–lattice coupling coefficients (SLCC). Another check of the validity of the LF model from a previous analysis of the four vibronic lines of the fluorescent level of Mn 2+ in ZnS is briefly recalled.