Relationship between the crystal structure and the reentrant superconducting properties of (Sn(1-x)Er(x))Er4Rh6Sn18.

The quantitative relationship between the crystal structure and the superconducting/magnetic properties allows on to make predictions as to new reentrant superconductors in the MRh (x)Sn(y) series (M = RE). This appears to be the first system of reentrant superconductors where stoichiometry within a sublattice controls both magnetic ordering and superconductivity.