A fulleride Sm6C60 has been synthesized using the high-temperature solid-st
ate reaction. The Rietveld refinement on high-resolution synchrotron x-ray
powder-diffraction data shows that Sm6C60 is isostructural with body-center
ed-cubic A(6)C(60) (A = K, Ba). The Raman spectrum of Sm6C60 is similar to
that of Ba6C60 and the frequencies of two A, modes in Sm6C60 are nearly the
same as that of Ba6C60, suggesting that Sm is divalent and hybridization b
etween C-60 molecules and the Sm atom could exist in Sm6C60. Resistivity me
asurement shows a weak T-linear behavior above 180 K; the transport at low
temperature is mainly dominated by granular-metal theory. [S0163-1829(99)02
533-3].