Formation of Oxygen Decorated Defects in AgCd Alloys

Abstract

The internal oxidation phenomena and oxygen decorated vacancies’ formation in silver nave been investigated since a few years (1,2,3). However, in spite of the phenomenological model presented by Schroeder et al. (4), the mechanism of the ¹¹¹In-O_xV_y complexes still needs further confirmation. It was our aim to observe the oxygen agglomeration at ¹¹¹In in the presence of vacancies in AgCd alloys, comparing two ways of ¹¹¹In probe atom production — via ¹⁰⁹Ag /α,2n/¹¹¹In and ¹¹¹Cd /d,2n/ ¹¹¹In reactions. We report also the preliminary results on the irradiation temperature influence on the formation of the complexes mentioned above. In order to extract the influence of the cadmium presence in silver sample, the same experiments for pure Ag, oxidized, irradiated and annealed in vacuum simultaneously with AgCd alloys were performed.