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Concentration of “impurity” ion clusters in a two‐dimensional host lattice
Author(s) -
Trutia A.,
Iova F.,
Vodâ M.
Publication year - 1977
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.2220840249
Subject(s) - superexchange , diamagnetism , ion , cluster (spacecraft) , impurity , lattice (music) , chemistry , crystal structure , chemical physics , condensed matter physics , molecular physics , crystallography , physics , magnetic field , organic chemistry , quantum mechanics , computer science , acoustics , programming language
The concentrations of magnetically active ions in clusters occurring in a diamagnetic two‐dimensional host lattice are statistically calculated. This is done for an initial, total active ion concentration ranging from 1 to 100 mol% and for all geometrically possible cluster types from singlets to septets, 449 in all. The model taken into consideration is a real Z(M)X 2 ‐type crystal, where it is presumed that a direct exchange intra‐layer is the only important interaction (no superexchange). These calculations are made in order to provide a basis for understanding the nature of the concentration‐sensitive optical absorption bands and magnetic behaviour of some crystals containing transition metal ions.