Magnetism and superconductivity in Sc5−xDyxIr4Si10 alloys

Abstract

We report the study of superconductivity and magnetism in ${\mathrm{Sc}}_{5\mathrm{-}\mathit{x}}$ ${\mathrm{Dy}}_{\mathit{x}}$ ${\mathrm{Ir}}_4$ ${\mathrm{Si}}_{10}$ (x=0,0.5, 1,1.5,2,3,4,4.5,5) alloys. We find that the superconducting transition temperature decreases as x increases and a linear increase of antiferromagnetic ordering temperature from x=2 to 5. We also report an observation of the coexistence of superconductivity and magnetism for x=1.5 from resistivity and ac susceptibility measurements in small applied dc magnetic fields.