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Structure and reaction kinetics of111In-oxygen complexes in irradiated silver

Research paper by D. Wegner, M. Uhrmacher, K. P. Lieb

Indexed on: 01 Dec '87Published on: 01 Dec '87Published in: Zeitschrift für Physik B Condensed Matter



Abstract

The agglomeration of oxygen at dilute111In in silver in the presence of radiation defects has recently been investigated via the perturbed angular correlation (PAC) technique. We propose here a detailed model description of the structures of In-O and In-O-vacancy complexes and of their reaction kinetics. It is shown that the dependence of the relative fractions of different complexes on the annealing time and temperature, the initial oxygen concentration and the irradiation dose can be approximated by first-order rate equations. Reaction enthalpies and reaction constants of the trapping and detrapping processes were derived from the isothermal and isochronal annealing programs and attributed to reactions which involve oxygen atoms and oxygen decorated vacancies.