Superconductivity and hardness of the equiatomic high-entropy alloy HfMoNbTiZr

Abstract

We have found that body-centered cubic (bcc) HfMoNbTiZr is a type-II BCS high-entropy alloy (HEA) superconductor with a superconducting critical temperature of T c =4.1 K. By employing a Debye temperature θ D of 263 K and T c , the electron-phonon coupling constant λ e−p is calculated to be 0.63. The electronic structure calculation revealed band broadening with