A Study on Chemical Short Range Ordering in Pd40Ni40P20Bulk Metallic Glass by Anomalous X-ray Scattering

Osami Haruyama, Takahiro Makimura, Tomoki Miyakawa, Kazumasa Sugiyama

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

A local change in the amorphous structure of bulk Pd40Ni40P20 glass during the thermal relaxation related to the chemical short-range order (CSRO) was examined by anomalous X-ray scattering (AXS) with energies near Ni and Pd K-absorption edges. The reversible CSRO process was confirmed by electrical resistance and density measurements. The environmental structural analysis around Ni and Pd revealed that the coordination number of Ni-Ni and Pd-Pd like-atom pairs increased with the degree of order formed in the CSRO process, while that of Ni-Pd unlike-atom pair decreased. The present analysis clearly indicates that the reversible CSRO process in the Pd40Ni40P20bulk glass is inferred to be a local structural change such like the micro-phase separation.

Original languageEnglish
Pages (from-to)381-392
Number of pages12
JournalHigh Temperature Materials and Processes
Volume29
Issue number5-6
DOIs
Publication statusPublished - 2010 Apr 17

Keywords

  • anomalous x-ray scattering
  • bulk metallic glass
  • chemical short range ordering

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Physical and Theoretical Chemistry

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