THE MAGNETIC-SUSCEPTIBILITY OF HYDROGEN-DOPED ZR67CO33 METALLIC-GLASS

The magnetic susceptibility of hydrogen-doped Zr67Co33 metallic glass has been measured at temperatures between 1.7 and 100 K for various do pant concentrations, The system is paramagnetic with magnetic suscepti bilities that are only weakly temperature dependent down to about 25 K , below which a slight increase can be observed. It has been found tha t chi(100 K) decreases substantially with increasing hydrogen content. This behaviour is primarily attributed to reductions in the density o f the Fermi level electronic states. The form and magnitude of the obs erved anomalous temperature dependence of the magnetic susceptibility are in agreement nith recent electron interaction theories, which pred ict quantum corrections to the susceptibility. Hydrogen has been found to influence strongly the quantum-mechanical interference at defects, thus slowing down the spin diffusion and enhancing the susceptibility at low temperature. (C) 1998 Elsevier Science B.V, All rights reserve d.