Investigation of solid-state reaction in Ag/Sn nanostructured thin films at room temperature

N. Samy, S. S. Shenouda, M. Fadel, H. Talaat, G. L. Katona, G. A. Langer, A. Csik, D. L. Beke

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Diffusion intermixing processes in nanostructured Ag/Sn thin-film system at room temperature were investigated by means of secondary neutral mass Spectrometry depth profiling technique. As it was confirmed by X-ray diffraction too, the reaction started already in the as-deposited sample. Since the bulk diffusion was frozen at room temperature, the Ag3Sn phase was formed along the grain boundaries (GBs), gradually consuming the interior of grains, and was grown perpendicular to the GBs. At the same time, formation and growth of a small compact reaction layer near the interface were observed and the shift of the bordering parallel interfaces was controlled by GB diffusion. From the kinetics of the diffusion process in the above two mechanisms, both the interface velocity in the diffusion-induced grain boundary motion regime as well as the coefficient of parabolic growth in the planar growth regime were determined.

Original languageEnglish
Pages (from-to)2990-3001
Number of pages12
JournalPhilosophical Magazine
Volume95
Issue number27
DOIs
Publication statusPublished - Sep 22 2015

Keywords

  • GB diffusion
  • nanostructured thin films
  • thin-film reactions

ASJC Scopus subject areas

  • Condensed Matter Physics

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