The work Superconductivity in a New High-Entropy Alloy (NbTi)_0.67(MoHfV)_0.33 by Wojciech Nowak, Bartosz Rusin, Michał Babij, Rafał Topolnicki, Tomasz Ossowski, Adam Pikul, and Rafał Idczak describes the synthesis and state study of a superconductive high entropy alloy (NbTi)_0.67(MoHfV)_0.33.

It is one of the first high entropy titanium-rich materials. So far, the majority of high entropy alloys were based on the NbTa matrix, which was a common choice due to the fact that both niobium and tantalum naturally occur in a regular body-centered cubic structure (bcc). In contrast, the NbTi matrix shows more favorable parameters (critical temperature and upper critical field) of the superconductive state, although it is not a mixture of components with the same crystalline structure because titan crystallizes in a hexagonal structure.

The figure shows a phase diagram of superconductivity (dependence of the upper critical field as a function of temperature) drawn up using the Werthamer-Helfand-Hohenberg (WHH) model. The work focuses not only on measuring the physical properties of the material, such as magnetism, specific resistance, or specific heat, but also on theoretical calculations with the PAW and KKR-CPA methods.