Systematic studies on the structural and magnetic properties of 3d transition metal intercalation compounds of MxTiS2 (M = V, Cr, Mn, Fe, Co, and Ni; 0 ≦ x ≦ 1) have been carried out by X-ray powder diffraction, low-field ac magnetic susceptibility, magnetization, and 57Fe Mossbauer spectroscopy measurements. The interlayer spacing c depends remarkably on the 3d metals and their concentrations, while the intralayer spacing a is less dependent on these quantities. Such a behavior can be explained semiempirically by a model based on the concept of "resonance" in chemical bonding. Various types of magnetic phases in MxTiS2 ave been found and their magnetic properties can be understood in terms of an itinerant or band picture rather than a localized or rigid band model, in agreement with the recent band calculations using a self-consistent APW method.

J. Sci. Hiroshima Univ., Ser. A, Vol. 51. No. 2, pp. 139-159. August 1987