Synthesis and magnetic characterisation of fullerene derivative based ferromagnets 1-(3-nitro)- and 1-(3-aminophenyl)-1H-methanofullerene doped with cobaltocene

摘要

A systematic study of the synthesis conditions in correalation with low-temperature magnetic properties is reported in 1-(3-aminophenyl)-1H methanofullerene(C_(60))-(Cp_2Co) (AphCo) and 1-(3-nitrophenyl)-1H-methanofullerene(C_(60))-(Cp_2Co) (NiPhCo), with a Curie temperature of T_c = 15 K; the latter is a newly discovered fullerene ferromagnet. The crystallisation conditions are found to play a critical role in determining the low-temperature ferromagnetic properties of these fullerene charge-transfer ferromagnets.