Exchange Interactions in M_xTiS₂ (M=Fe, Co)

Abstract

A trial is made for determining the origin of exchangeinteractions between spins of two intercalation compounds, Fe_0.05TiS₂ and Co_0.1TiS₂, by comparing the change in spin glass transition temperature T_gaccompanying a change in conduction electron number.For the purpose of changing the conduction electron number, 5\are substituted by Ta.In Co_0.1TiS₂, T_g changes and the RKKY interaction may bethe dominant exchange interaction.In Fe_0.05TiS₂, although the change in T_g is small, a tendency toward the RKKY interaction is suggested.