INDUCED MAGNETIC HYPERFINE FIELD AT AG SITES NEAR AN FE(100) AG(100) INTERFACE/

A magnetic hyperfine field induced at Ag sites near the interface betw een a Ag(100) crystal and an epitaxially grown bcc Fe(100) film has be en measured with monolayer resolution. Utilizing perturbed-angular-cor relation spectroscopy with In-111 probes a magnetic hyperfine field in the first atomic Ag layer is found to be strongly reduced relative to the Fe bulk value and decreases very quickly as a function of distanc e from the interface. For both sides of the interface the temperature dependence is well described by a T-3/2 spin-wave behavior; however, i t is strongly enhanced on the nonmagnetic side.