Superconductivity in Ti67Zr19Nb11.5Sn2.5 shape memory alloy

Shape memory alloys (SMAs) exhibit unique functionalities due to their superelastic and shape properties. The ability program alter shapes following a thermomechanical stimulus makes them highly important materials for vast number of applications in the aerospace, automotive, biomedical, robotic sectors. Research on SMAs has largely focused metallurgical, mechanical, structural, or phase transformation Here, we investigate electrical, magnetic, thermodynamic properties biocompatible SMA, ${\mathrm{Ti}}_{67}{\mathrm{Zr}}_{19}{\mathrm{Nb}}_{11.5}{\mathrm{Sn}}_{2.5}$ (at. %). In particular, report discovery superconducting transition with critical temperature 4.65 K 0 magnetic fields ${H}_{\mathrm{c}1}=13.7\phantom{\rule{0.16em}{0ex}}\mathrm{mT}$ ${H}_{\mathrm{c}2}=9.2\phantom{\rule{0.16em}{0ex}}\mathrm{T}$. From dependence specific heat local field measurements using transverse muon spin rotation, also determine coherence 6 nm London penetration depth 776 nm. results are key towards development cryogenic electrical device SMA materials.