Physics and Chemistry of Minerals

, Volume 35, Issue 4, pp 189–195

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
Original Paper

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 χ0 = −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.

Keywords

Post-perovskite CaPtO3 High-pressure synthesis Rietveld analysis Morphology 

Copyright information

© Springer-Verlag 2007

Authors and Affiliations

  • Kenya Ohgushi
    • 1
  • Yoshitaka Matsushita
    • 2
  • Nobuyoshi Miyajima
    • 3
  • Yoshio Katsuya
    • 4
  • Masahiko Tanaka
    • 5
  • Fujio Izumi
    • 2
  • Hirotada Gotou
    • 1
  • Yutaka Ueda
    • 1
  • Takehiko Yagi
    • 1
  1. 1.Institute for Solid State PhysicsUniversity of TokyoKashiwaJapan
  2. 2.Quantum Beam CenterNational Institute for Materials Science (NIMS)TsukubaJapan
  3. 3.Bayerisches GeoinstitutUniversität BayreuthBayreuthGermany
  4. 4.SPring-8 Service Co. LtdSayoJapan
  5. 5.BL15XU/SPring8National Institute for Materials Science (NIMS)SayoJapan

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