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

27 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

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Nanoclusters
Metallic glass
metallic glasses
nanoclusters
Phase separation
matrices
range errors
phosphides
interfacial energy
Aberrations
Interfacial energy
aberration
Transmission electron microscopy
Imaging techniques
Atoms
transmission electron microscopy
probes
high resolution
atoms

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Local atomic ordering and nanoscale phase separation in a Pd-Ni-P bulk metallic glass. / Hirotsu, Yoshihiko; Nieh, T. G.; Hirata, Akihiko; Ohkubo, Tadakatsu; Tanaka, Nobuo.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 73, No. 1, 012205, 27.02.2006.

Research output: Contribution to journalArticle

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