Magnetic Properties of Some Fullerene Compounds

Magnetic properties of some fullerene intercalation compounds are detailed. A few examples are presented including properties of 1) Accepters : MoF6. From magnetic measurements the existence of positively charged C-60 (C-60(+)) can be inferred. 2) Donnors : YbxC60 and Eu3C60 compounds. Magnetic properties of (YbxC60) are dominated by crystal field effects. A high field magnetic transition (17 T at 4 K) occurs in Eu3C60 associated with a large hysteresis of the magnetization and relaxation effects. This complex magnetic behaviour is attribued to Eu2+.