Elastic neutron diffraction measurements were performed on single crystals to study the ground state below the mysterious exotic transition temperature 0.86 K.
β-quenching a Zr-1.15 wt%Cr-0.10 wt%Fe alloy produces a martensitic or a Widmanst(a|¨)tten transforma-tion morphology,or a mixture of the two,depending on t