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

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


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
Publication statusPublished - 2015 Jul 15

Bibliographical note

Funding Information:
This work was supported by the Global Research Laboratory Program of the Korean Ministry of Education, Science and Technology .

Publisher Copyright:
© 2015 Acta Materialia Inc.

All Science Journal Classification (ASJC) codes

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


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