PECULIARITIES OF ELECTRON WEAK-LOCALIZATI ON AND ELECTRON-ELECTRON INTERACTION EFFECTS IN DISORDERED PLATINUM FILMS WITH MAGNETIC-IMPURITIES

The effects of electron weak localization (WL) and electron-electron i nteraction (EEI) in the conductivity of disordered platinum films with Cr magnetic impurities have been studied. The films were prepared by vacuum deposition. The irradiation with Ar+ ions was used to increase the disorder of films. It was found that the electron spin-flip scatte ring had a predominant contribution in the electron phase relaxation p rocesses in the films investigated. The magnitude and temperature beha viour of spin-spin scattering time were determined. The presence of ma gnetic impurities causes also the significant contribution of Kondo ef fect to film conductivity at low temperatures (< 10 K). The data obtai ned allow us to separate the contribution of WL and EEI effects from t hat of the Kondo one. It is shown that the relative contribution of Ko ndo effect to resistance decreases markedly with the increasing film d isorder. However, the value, of Kondo correction to resistivity depend s neither on thickness nor disorder of the film.