Magnetic properties of the fullerene organic compounds in strong magnetic fields

Magnetisation study of the C60·TMTSF·2CS2 molecular complex in magnetic field up to 47 T for the temperature range 1.8–300 K and ESR spectroscopy of the molecular complex (ET)2C60 at T=1.8 K for the frequency range 60–90 GHz in magnetic field up to 32 T provide the experimental evidence that a paramagnetic centers with the reduced g-factor values g<1 control magnetic properties of these solids. Anomalous g-factor values may be caused by dynamic Jan-Teller effect on the negative C60 ions, which appear as defects in crystalline structure with a weak charge transfer.

Magnetisation and ESR spectroscopy data for the molecular complexes C60·TMTSF·2CS2 and (ET)2C60 provide experimental evidence that a paramagnetic centers with the reduced g-factor values g<1 (g1=0.43±0.03, g2=0.27±0.02 and g3=0.19±0.01) control magnetic properties of these solids. Anomalous g-factor values may be caused by dynamic Jan-Teller effect on the negative C60 ions, which appear as defects in crystalline structure with a weak charge transfer.Figure optionsDownload as PowerPoint slide