High pressure synthesis, crystal structure and physical properties of a new Ni(II) perovskite BiNiO3

Shintaro Ishiwata, Masaki Azuma, Mikio Takano, Eiji Nishibori, Masaki Takata, Makoto Sakata, Kenichi Kato

Research output: Contribution to journalArticlepeer-review

116 Citations (Scopus)

Abstract

A new triclinic perovskite, BiNiO3, has been synthesized at a high pressure of 6 GPa in an oxidizing atmosphere. Structure refinements based on synchrotron X-ray powder diffraction and bond-valence calculations revealed a disproportionation of the Bi ions into Bi3+ and Bi5+, both being located in distorted oxygen octahedra. Because of the presence of Bi5+, the oxidation state of Ni was +2, rather than +3 as had been expected; BiNiO3 thus showed insulating behavior with localized spins of S = 1.

Original languageEnglish
Pages (from-to)3733-3737
Number of pages5
JournalJournal of Materials Chemistry
Volume12
Issue number12
DOIs
Publication statusPublished - 2002 Dec 1
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Chemistry

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