Magnetic Properties of 3d Transition Element Intercalated Compounds MxTiSe2

Abstract

Polycrystalline samples of MxTiSe2 with M=V, Cr, Mn, Fe, Co, Ni and Cu were prepared. All the compounds showed paramagnetic behavior at 4.2K ≤ T ≤ 300 K. Effective paramagnetic moment μeff of all the M-atoms are much smaller than ionic values, suggesting that the M-states are strongly hybridized with the TiSe2-band. Cr, Mn, Fe and Co may be in the high-spin states. The μeff-data are compared with those of TyTiS2 with T=V, Mn, Fe, Co, Ni and Cu in our previous studies and with the band calculation results of Motizuki et al., and discussions are done about the electronic states of T- and M-atoms. It is suggested that the S-3p states are hardly hybridized and the Se-3p states are slightly hybridized with a Ti-3dε non-bonding band.