Structure and superconducting properties of Ru_1–xMo_x (x = 0.1–0.9) alloys

We report the detailed crystal structures and physical properties of Ru_1−xMo_x alloys in the solid solution range of x = 0.1–0.9. Structure characterizations indicate that the crystal structure changes from the hcp-Mg-type, to β-CrFe-type, and then bcc-W-type. The measurements of physical properties show that the Ru_1−xMo_x samples with x ≥ 0.2 are superconductors and the superconducting transition temperature T_c as a function of Mo content exhibits a dome-like behavior.