Charge-Transfer-Induced Spin Transitions in Crystals Containing Cyanide-Bridged Co–Fe Clusters: Role of Intra- and Intercluster Interactions

A theoretical model has been developed to explain at the electronic level the charge-transfer-induced spin transition (CTIST) in crystals based on cyano-bridged binuclear Fe–Co clusters. The CTIST is considered as a cooperative phenomenon (phase transformation) driven by the long-range electron-defo...

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Veröffentlicht in:The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory Molecules, spectroscopy, kinetics, environment, & general theory, 2012-09, Vol.116 (38), p.9534-9544
Hauptverfasser: Roman, Marianna A, Reu, Oleg S, Klokishner, Sophia I
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Sprache:eng
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Zusammenfassung:A theoretical model has been developed to explain at the electronic level the charge-transfer-induced spin transition (CTIST) in crystals based on cyano-bridged binuclear Fe–Co clusters. The CTIST is considered as a cooperative phenomenon (phase transformation) driven by the long-range electron-deformational interaction via the acoustic phonons field that is taken into account within the mean field approach. The model for CTIST includes also the metal–metal electron transfer and intracluster magnetic exchange. The conditions that favor the CTIST are discussed. The qualitative explanation of the experimental data is given.
ISSN:1089-5639
1520-5215
DOI:10.1021/jp304560u