Anharmonic effective pair potentials of group VIII and Ib fcc metals

Maki Okube, Akira Yoshiasa

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

Abstract

The temperature dependence of EXAFS Debye-Waller factors and anharmonic effective pair potentials of group VIII and Ib fcc metals were investigated by a cumulant expansion method. The EXAFS spectra near K- or L3-edges were measured at the temperatures from 30 to 800 K using synchrotron radiation from the Photon Factory, Tsukuba. The effective pair potentials, a·u2/2!+ b·u3/3! denote that the group Ib has obviously larger anharmonisity than the group VIII metals. The discrepancy between the Morse potential approximation and determined effective pair potential is discussed.

Original languageEnglish
Pages (from-to)937-939
Number of pages3
JournalJournal of Synchrotron Radiation
Volume8
Issue number2
DOIs
Publication statusPublished - 2001 Mar 1

Keywords

  • Anharmonicity
  • Debye-Waller factors
  • Effective pair potential
  • Morse potential
  • fcc metal

ASJC Scopus subject areas

  • Radiation
  • Nuclear and High Energy Physics
  • Instrumentation

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