Transformation process of the magnetron-sputtered Ag${}_2$O film in hydrogen annealing

Abstract

The current paper mainly addresses the effect of the hydrogen partial pressure on the microstructure and transformation of the Ag${}_2$O film. The transformation process and mechanism were also analyzed in detail. Increasing the hydrogen partial pressure can accelerate the transformation of Ag${}_2$O to Ag and lower the critical transformation temperature of the film due to the enhanced hydrogen reduction, and to both of the lowered activation energy of the reaction of Ag${}_2$O with hydrogen and enhanced lattice strain of the Ag${}_2$O film, respectively. Hydrogen-involved reaction in the whole hydrogen annealing process is mainly hydrogen reduction reaction with Ag${}_2$O. The diffusion of hydrogen and gaseous H${}_2$O molecules is accompanied with the whole hydrogen annealing process.

arXiv commentThis manuscript will appear in Volume 43 of the Brazilian Journal of Physics