Effect of iron impurity on the superconducting transition temperature and magnetic properties of some ternary molybdenum sulfides
Alekseevskii N.E. , Vol'f G. , Dobrovol'skii N.M. , El'tsev Yu.F. , Zakosarenko V.M. , Tsebro V.I.
A strong suppression of superconductivity by an iron impurity and large effective magnetic moments per impurity atom in the ternary molybdenum sulfides such as PbMo6S8, which can cause a strong indirect exchange, indicate that the investigated compounds may be ferromagnetically unstable.