Recovery of electron-irradiated platinum. Part III

Abstract

Recovery data in the temperature range of stage II are presented for nominally pure Pt samples and dilute Pt(Au)-alloys. The dilute alloys exhibit three well defined substages near 28, 42 and 90 K. Evidence is presented which points towards a rearrangement of trapped interstitials at Au-atoms in the substages at 28 and 42K and to dissociation of interstitials from Au-atoms at 90 K. At low initial defect densities the nominally pure samples exhibit substages near 120K and in the temperature range between 200 and 500K. Probably most of these substages are not of intrinsic character but are related to residual impurities. At high initial defect densities a gradual and continuous intrinsic stage II recovery is observed.