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High spin (5T2)-low spin (1A1) equilibrium of iron (II) in M2FeSn3S8 thiospinels (M = Cu, Ag)

✍ Scribed by M. Womes; J.-C. Jumas; J. Olivier-Fourcade; F. Aubertin; U. Gonser

Publisher: Elsevier Science
Year: 1993
Tongue: English
Weight: 324 KB
Volume: 201
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(93)85116-6

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✦ Synopsis

The compounds M2FeSn& (M=Cu, Ag) represent, to our knowledge, the first example ofan iron(I1) high spin ('T2) -low spin ('A, ) transition in the spine1 lattice. Additionally, these compounds are one of the rare caSes where such a spin transition is observed for bivalent iron in an octahedral sulfur coordination. The ('T2) -('A, ) transition in M,FeSn& is of the continuous type as is shown by the present "Fe Miissbauer study as well as by previous magnetic susceptibility measurements.

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