N. V. Baranov, V. G. Pleshchev, E. M. Sherokalova, N. V. Selezneva, A. S. Volegov, “Influence of the chalcogen substitution on the character of magnetic ordering in Fe$_{0.5}$TiS$_{2-x}$Se$_x$ intercalated compounds”, Fizika Tverdogo Tela, 2011, Volume 53, Issue 4,Pages 654

This article is cited in 4 papers

Magnetism

Influence of the chalcogen substitution on the character of magnetic ordering in Fe$_{0.5}$TiS$_{2-x}$Se$_x$ intercalated compounds

N. V. Baranov^ab, V. G. Pleshchev^a, E. M. Sherokalova^a, N. V. Selezneva^a, A. S. Volegov^a

^a Ural State University, Ekaterinburg
^b Institute of Metal Physics, Ural Branch of the Russian Academy of Sciences, Ekaterinburg

Abstract: The crystal structure and magnetic properties of layered Fe$_{0.5}$TiS$_{2-x}$Se$_x$ (0 $\le x\le$ 2) compounds intercalated by iron atoms have been investigated. It has been shown that the substitution of selenium for sulfur is accompanied by an increase in the unit cell volume, a transition from the ferromagnetic to antiferromagnetic behavior, and a nonmonotonic variation in the paramagnetic Curie temperature. The intercalated iron atoms are characterized by lower values of the effective moment (3.4–4.0$\mu_{\mathrm{B}}$) as compared to the predicted value (4.89 $\mu_{\mathrm{B}}$) for the Fe$^{2+}$ ion at $g$ = 2. The results obtained have been discussed under the assumption that there are the hybridization of 3$d$ electronic states of intercalated Fe atoms with the electronic states of the Ti$_{2-x}$Se$_x$ host compounds and the competition of exchange interactions of different types.

Received: 22.07.2010