EXCHANGE INTERACTIONS IN M(X)TIS(2) (M=FE, CO)

A trial is made for determining the origin of exchange interactions be tween spins of two intercalation compounds, Fe0.05TiS2 and Co0.1TiS(2) , by comparing the change in spin glass transition temperature T-g acc ompanying a change in conduction electron number. For the purpose of c hanging the conduction electron number, 5% of Ti are substituted by Ta . In Co0.1TiS2 T-g changes and the RKKY interaction may be the dominan t exchange interaction. In Fe0.05TiS2, although the change in T-g is s mall, a tendency toward the RKKY interaction is suggested.