Low temperature studies on magnetic properties of

Magnetic properties of Tm2O3 were studied by means of magnetometry as well as by heat capacity measurements. The specific heat data were collected down to 0.35 K, and yielded some new information about crystal field splitting of the 3H6 thulium multiplet. Some anomalous behaviour of the specific heat below 5 K was observed. It turned out, that this anomaly can be nicely described by Schottky contribution originating from crystal field levels distribution of the Tm3+ multiplet. No magnetic ordering was evidenced down to the lowest temperatures studied.