Anisotropic Spin-Glass and Cluster-Glass of Layered Fe_xTiS₂ Crystals

Abstract

Zero-field cooled (ZFC) and field cooled (FC) magnetizations have been measured on the spin- and cluster-glasses of iron intercalation compound Fe_xTiS₂ (x=0.1–1⁄3) over the temperature range 4.2–150 K. We have found appreciable field cooling effects in both spin- and cluster-glass phases. From the observed ZFC and FC curves, strong anisotropies in the paramagnetic Curie temperature and effective magnetic moments are found, for which a qualitative discussion is given.