발간논문

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Vol.26, No.5, 470 ~ 480, 1988
Title
Auger electron Spectroscopy and X-ray photoelectron spectroscopy Studies on amorphous Gd - Fe Alloy Films
이성래 Seong Rae Lee
Abstract
Changes of the electronic structure as functions of oxygen content and composition of the co-evaporated amorphous Gd-Fe alloy films have been studied using an Auger electron spectroscopy and a x-ray photo-electron spectroscopy. A comparison of the spectra for oxidized species to trose of pure Gd element or alloy films showed characteristic differences in the low energy Auger transitions, usually incorporating the valence level and the L₁or L₂.₃ levels of oxygen. The disappearance of the N₂N_(4.5)O₂.₃transition at 122ev in an oxidized Gd was speculated to be due to a cross transition such as N₂N_(4.5)L₁(O). The charge transfer from a Cd atom to the 3d levee of Fe was less than leV per Gd atom, and binding energies of core levels were barely affected by the change of chemical composition of the alloy film, No, chemical effect was observed from the Auger spectra of the amorphous Gd-Fe films. SiO layers thicker than 200Å coated on both sides of the film were effective in preventing oxidation of the amorphous film.
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