H. Kajii et al., Alkali metal doping effect in conducting polymer-C60 composites : low-field microwave absorption and susceptibility study, SYNTH METAL, 103(1-3), 1999, pp. 2388-2391
Superconducting phases in composites of C-60 With various types of conducti
ng polymer (CP) doped by alkali metals are studied by LFMA and susceptibili
ty measurements. LFMA signal drastically changes due to the metallization o
f CP with increasing alkali metal doping level. At large C60 content, Param
agnetic Meissner Effect is confirmed in field cooling curve. The existence
of intergranular and intragranular junctions is supported from the results
of AC susceptibility measurements.