Superconductivity in ZrVGe and HfVGe compounds

In the Zr-V-Ge and Hf-V-Ge there are two ternary phases of ZrVGe and HfVGe compositions which crystallize in a tetragonal symmetry. Both structures crystallize in the UGeTe prototype with space group I4/mmm. The lattice parameters of the two compounds are a = 3.72 {\AA} and c = 14.34 {\AA} for HfVGe and a = 3.75 {\AA} and c = 14.48 {\AA} for ZrVGe. In this structure the elements are arranged in layers in which obey V-RM-Ge sequence, where RM represents the refractory metal like Zr or Hf. In this work we show that both compounds are bulk superconductor with superconducting critical temperature at 4.8 K for HfVGe and 6.0 for ZrVGe.