Influence of Microstructure on the Superconductivity of a Dilute Ti-Mo Alloy

Abstract

Low-temperature specific-heat studies have shown that the superconducting transitions of thermally and mechanically induced martensitic structures, in quenched Ti-Mo (4½ at.%), occur in the range 2.5-3.2°K, compared to an estimated 0.5°K for the undistorted material. It is concluded that these thermal and deformation martensites are examples of structures in which "soft-phonon" modes are operative to increase $T_c$ above what would be expected for unfaulted lattices of similar compositions.