This article is cited in 18 papers

Magnetism

Magnetic state and properties of the Fe$_{0.5}$TiSe$_2$ intercalation compound

N. V. Selezneva^a, N. V. Baranov^ab, V. G. Pleshchev^a, N. V. Mushnikov^b, V. I. Maksimov<sup>b

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

Abstract: The Fe$_{0.5}$TiSe$_2$ compound with a monoclinic crystal structure has been prepared by intercalation of Fe atoms between Se–Ti–Se sandwiches in the layered structure of TiSe$_2$. The crystal and magnetic structures, electrical resistivity, and magnetization of the Fe$_{0.5}$TiSe$_2$ compound have been investigated. According to the neutron diffraction data, the Fe$_{0.5}$TiSe$_2$ compound has a tilted antiferromagnetic structure at temperatures below the Néel temperature of 135 K, in which the magnetic moments of Fe atoms are antiferromagnetically ordered inside layers and located at an angle of approximately 74.4$^\circ$ with respect to the layer plane. The magnetic moment of Fe atoms is equal to (2.98 $\pm$ 0.05)$\mu_B$. The antiferromagnetic ordering is accompanied by anisotropic spontaneous magnetostrictive distortions of the crystal lattice, which is associated with the spin-orbit interaction and the effect of the crystal field.

Received: 11.05.2010
Accepted: 03.06.2010

 English version: Physics of the Solid State, 2011, 53:2, 329–336

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