Superconductivity of heterofullerides with one or two atoms of the alkali metals and gallium, indium, bismuth or tin

Temperature dependence of a magnetic susceptibility for new superconducting fullerides RbGaxC60 and RbGaxInyC60 with orthorhombic crystal lattice. The new superconducting heterofullerides with the composition AnGaxC60 and AnGaxMyC60 (A = K, Rb; n = 1, 2; M = In, Sn, Bi; x, y < 1) were synthesized by a new method of reactions of liquid alloys (alkali metal with gallium or gallams) with a solution of fullerene in the organic solvent at temperature 110-120 °C. Temperature dependence of the magnetic susceptibility was measured in the temperature interval from 4.2 K to 100 K and transitions to the superconducting state were detected at temperatures Тс ranged from 7 K to 25 K.97