Low-temperature crystal structures and superconductivity of(Hf1−xZrx)V2alloys

Abstract

X-ray diffraction patterns of the cubic Laves phases $\left({\mathrm{Hf}}_{1-x}{\mathrm{Zr}}_x\right){\mathrm{V}}_2$ have been obtained at 4 K. For $x<\mathrm{}0.40\mathrm{}$ the low-temperature crystal structure is orthorhombic; for $x>\mathrm{}0.45\mathrm{}$ the low-temperature structure is rhombohedral. The discontinuity of structure is correlated with that of several superconductive properties of these alloys.