CaPtO3 as a novel post-perovskite oxide

Kenya Ohgushi, Yoshitaka Matsushita, Nobuyoshi Miyajima, Yoshio Katsuya, Masahiko Tanaka, Fujio Izumi, Hirotada Gotou, Yutaka Ueda, Takehiko Yagi

Research output: Contribution to journalArticlepeer-review

44 Citations (Scopus)

Abstract

Structural, morphological, magnetic, and thermal properties have been investigated for a novel post-perovskite oxide CaPtO3 synthesized under high pressure. By comparing obtained structural parameters with those for known post-perovskite compounds, we argue that the chemical bond has a strong covalent character. Precise measurements of the Langevin susceptibility Χo = -9.6 × 10-5 emu/mol and Debye temperature θ ∼ 470 K provide a good opportunity to confirm the reliability of first-principle calculations on predicting physical properties of the Earth's D" layer.

Original languageEnglish
Pages (from-to)189-195
Number of pages7
JournalPhysics and Chemistry of Minerals
Volume35
Issue number4
DOIs
Publication statusPublished - 2008 May 1
Externally publishedYes

Keywords

  • CaPtO
  • High-pressure synthesis
  • Morphology
  • Post-perovskite
  • Rietveld analysis

ASJC Scopus subject areas

  • Materials Science(all)
  • Geochemistry and Petrology

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