Solid argon precipitation in a metallic glass: Does free-volume help?

T. Miyauchi, H. Kato, E. Abe

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


We find that small particles (1 nm) of solid argon are densely precipitated in a Pd40Ni20P20 metallic glass matrix after argon ion-beam irradiation with an accelerating voltage of 4 keV. This is in sharp contrast to the case of noble-gas implantations into crystalline metals, for which high-energy beam (50-300 keV) has been essential to promote creations of precursor defects, such as voids or vacancy aggregates for initial confinements of noble-gas atoms. Therefore, the present low-energy implantation implies that the argon confinements have occurred at pre-existing low-density regions in the glass matrix, providing an important clue to phenomenological free-volume entities.

Original languageEnglish
Pages (from-to)94-99
Number of pages6
JournalMaterials Research Letters
Issue number2
Publication statusPublished - 2014


  • Electron microscopy
  • Metallic glass
  • Microstructure


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