Open Access

ARTICLE

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

N. V. Urusova^a,*, A. I. Merentsov^b,c, E. A. Stepanova^a,c, O. G. Reznitskikh^a

a Institute of Solid State Chemistry, Ekaterinburg 620108, Russia
b Institute of Metal Physics, Ekaterinburg 620137, Russia
c Institute of Natural Sciences and Mathematics, Ural Federal University, Ekaterinburg 620009, Russia

* Corresponding Author:

Chalcogenide Letters 2023, 20(5), 343-351. https://doi.org/10.15251/CL.2023.205.343

Received 14 March 2023; Accepted 12 May 2023;

Abstract

Co_xTiS₂ (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 Co_xTiS₂ 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 Co_0.75TiS₂ below T_c = 375 K.

---

Keywords

---