Positron annihilation in glassy metals

Abstract

Glassy Ni-P and Co-P alloys are studied by positron annihilation. The angular correlation of the glassy state is not so different from that of the crystalline state of the alloys. This shows that the alloys do not consist of very fine crystals but a supercooled uniform glassy state. This result also supports the fact that positrons push neighbouring atoms in the liquid metals.