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

doi:10.1007/s00269-007-0211-5

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 journal › Article › peer-review

47 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 Χ_o = -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 language	English
Pages (from-to)	189-195
Number of pages	7
Journal	Physics and Chemistry of Minerals
Volume	35
Issue number	4
DOIs	https://doi.org/10.1007/s00269-007-0211-5
Publication status	Published - 2008 May
Externally published	Yes

Keywords

CaPtO
High-pressure synthesis
Morphology
Post-perovskite
Rietveld analysis

ASJC Scopus subject areas

Materials Science(all)
Geochemistry and Petrology

Access to Document

10.1007/s00269-007-0211-5

Cite this

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title = "CaPtO3 as a novel post-perovskite oxide",

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.",

keywords = "CaPtO, High-pressure synthesis, Morphology, Post-perovskite, Rietveld analysis",

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

note = "Funding Information: We wish to thank H. Schulze (Bayreuth) for his assistance with TEM sample preparation, A. Yamamoto (Tsukuba) for his cooperation in the structural analysis, K. Niwa (Kashiwa), T. Okada (Kashiwa), A. Yamamoto (Wako), and P. Cordier (Lille) for enlightening discussions, and Y. Kiuchi (Kashiwa) for her technical assistance in SEM experiments. We also acknowledge two anonymous reviewers for useful comments. One of the authors (K. O.) is supported by the Japan Society for the Promotion of Science for Young Scientists. ",

year = "2008",

month = may,

doi = "10.1007/s00269-007-0211-5",

language = "English",

volume = "35",

pages = "189--195",

journal = "Physics and Chemistry of Minerals",

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publisher = "Springer Verlag",

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TY - JOUR

T1 - CaPtO3 as a novel post-perovskite oxide

AU - Ohgushi, Kenya

AU - Matsushita, Yoshitaka

AU - Miyajima, Nobuyoshi

AU - Katsuya, Yoshio

AU - Tanaka, Masahiko

AU - Izumi, Fujio

AU - Gotou, Hirotada

AU - Ueda, Yutaka

AU - Yagi, Takehiko

N1 - Funding Information: We wish to thank H. Schulze (Bayreuth) for his assistance with TEM sample preparation, A. Yamamoto (Tsukuba) for his cooperation in the structural analysis, K. Niwa (Kashiwa), T. Okada (Kashiwa), A. Yamamoto (Wako), and P. Cordier (Lille) for enlightening discussions, and Y. Kiuchi (Kashiwa) for her technical assistance in SEM experiments. We also acknowledge two anonymous reviewers for useful comments. One of the authors (K. O.) is supported by the Japan Society for the Promotion of Science for Young Scientists.

PY - 2008/5

Y1 - 2008/5

N2 - 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.

AB - 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.

KW - CaPtO

KW - High-pressure synthesis

KW - Morphology

KW - Post-perovskite

KW - Rietveld analysis

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SP - 189

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JO - Physics and Chemistry of Minerals

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