Local atomic ordering and nanoscale phase separation in a Pd-Ni-P bulk metallic glass

Yoshihiko Hirotsu, T. G. Nieh, Akihiko Hirata, Tadakatsu Ohkubo, Nobuo Tanaka

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

The local structure in a Pd40 Ni40 P20 bulk metallic glass was examined using a spherical-aberration-corrected high resolution TEM. Fcc-Pd(Ni) type nanoclusters and local compound (phosphide)-like nanoclusters with sizes of 1-2 nm embedded in a dense-randomly-packed amorphous matrix were clearly observed under an appropriate imaging condition. However, three-dimensional atom-probe elemental mapping revealed there is virtually no nanoscale compositional difference between the nanoclusters and amorphous matrix beyond the statistical error range. A very small interfacial energy between the nanophase and the matrix is able to form a metastable amorphous phase with a structural fluctuation.

Original languageEnglish
Article number012205
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume73
Issue number1
DOIs
Publication statusPublished - 2006 Feb 27
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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