CeSi: A non-Kondo trivalent Ce compound

Abstract

The magnetic properties of CeSi, which crystallizes in the FeB-type orthorhombic structure, have been investigated. CeSi orders antiferromagnetically at 5.6 K. Its ground-state magnetic moment attains a value of 1.47 μB in a field of 57 kOe at 3.0 K, which is far above the highest value ever observed for any Ce compound. The magnetic properties of this compound are like conventional stable moment rare-earth compounds and differ from other nearly trivalent Ce compounds. More specifically, unlike nearly trivalent Ce intermetallic compounds, no evidence for Kondo effect is apparent in this compound.