journal article·2023Open access

Features of structural ordering and magnetic properties of the cobalt intercalates of titanium dichalcogenides

Institute of Solid State Chemistry, Ekaterinburg 620108, Russia, N.V. Urusova, A.I. Merentsov, Institute of Metal Physics, Ekaterinburg 620137, Russia, E.A. Stepanov, Institute of Solid State Chemistry, Ekaterinburg 620108, Russia, O.G. Reznitskikh, Institute of Solid State Chemistry, Ekaterinburg 620108, Russia

Chalcogenide Letters· Volume 20· Issue 5

Abstract

CoxTiS2 (x = 0.20, 0.30, 0.50, 0.75) compounds have a layered crystal structure with Ti atoms surrounded by the S octahedrons in the S-Ti-S layers and Co ions which could be surrounded both by the S octahedrons and tetrahedrons. The features of the crystal structure and magnetic properties of the polycrystalline CoxTiS2 samples were studied as a function of the cobalt concentration using X-ray diffraction and magnetization measurements. The disordered state of the Co atoms (x < 0.20) changes to the ordered one (x ≥ 0.20). The magnetic ordering arises at x = 0.20 with mostly antiferromagnetic interaction. For compound with x = 0.30 and 0.50 there is a weak ferromagnetic ordering. The ferromagnetic ordering is observed in Co0.75TiS2 below Tc = 375 K.
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OpenAlex topics: Inorganic Chemistry and Materials · 2D Materials and Applications · Crystal Structures and Properties

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