Spatial correlations in the valence of metal ions in Ni1-xPdx(chxn)2Br3

Yusuke Wakabayashi, Nobuyoshi Wakabayashi, Masahiro Yamashita, Toshio Manabe, Nobuyuki Matsushita

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

X-ray scattering experiments have been performed on a quasi-one dimensional system, Ni1-xPdx(chxn)2Br3. Strong diffuse scattering was observed for x > 0.7, and it was interpreted as due to spatial inhomogeneity in the valence of metal ions. This inhomogeneity takes the form of CDW in which the metal ions within a chain have valences alternating between +2 and +4. Correlations in the valence sequence could be determined parallel as well as perpendicular to the chain direction. Pair correlation functions deduced from the measurements show the existence of strong correlation between the positions of bridging Br ions and those of Br counter ions. It is concluded that the valence of metal ions for x < 0.7 is +3. These results are consistent with previous data on optical and magnetic measurements.

Original languageEnglish
Pages (from-to)3948-3952
Number of pages5
Journaljournal of the physical society of japan
Volume68
Issue number12
DOIs
Publication statusPublished - 1999 Jan 1
Externally publishedYes

Keywords

  • CDW
  • Diffuse scattering
  • MX chain
  • Mixed compound
  • X-ray diffraction

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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