Formation of nano-porous GeOx by de-alloying of an Al-Ge-Mn amorphous alloy

K. C. Kim, S. H. Park, M. Y. Na, H. J. Chang, W. T. Kim, N. Mattern, J. Eckert, Y. Yokoyama, K. B. Kim, D. H. Kim

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Abstract

The present study shows that nanometer-scale amorphous phase separation occurs by spinodal decomposition of the undercooled liquid in a melt-spun Al60Ge30Mn10 alloy, although there is no atomic pair with positive enthalpy of mixing. By adopting a proper de-alloying process, an interconnected nano-porous germanium oxide with an amorphous structure is successfully synthesized. The present study shows that nano-porous amorphous germanium oxide can be easily obtained by de-alloying of Al-based amorphous alloys with nm-scale composition fluctuation.

Original languageEnglish
Pages (from-to)49-52
Number of pages4
JournalScripta Materialia
Volume104
DOIs
Publication statusPublished - 2015 Jul 15

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys

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    Kim, K. C., Park, S. H., Na, M. Y., Chang, H. J., Kim, W. T., Mattern, N., Eckert, J., Yokoyama, Y., Kim, K. B., & Kim, D. H. (2015). Formation of nano-porous GeOx by de-alloying of an Al-Ge-Mn amorphous alloy. Scripta Materialia, 104, 49-52. https://doi.org/10.1016/j.scriptamat.2015.03.022