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CaPtO3 as a novel post-perovskite oxide |
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| Authors: | Kenya Ohgushi Yoshitaka Matsushita Nobuyoshi Miyajima Yoshio Katsuya Masahiko Tanaka Fujio Izumi Hirotada Gotou Yutaka Ueda Takehiko Yagi |
| Institution: | 1. Institute for Solid State Physics, University of Tokyo, Kashiwa, 277-8581, Japan 2. Quantum Beam Center, National Institute for Materials Science (NIMS), Tsukuba, 305-0044, Japan 3. Bayerisches Geoinstitut, Universit?t Bayreuth, 95440, Bayreuth, Germany 4. SPring-8 Service Co. Ltd, Sayo, 679-5198, Japan 5. BL15XU/SPring8, National Institute for Materials Science (NIMS), Sayo, 679-5198, Japan |
| 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 0 = −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 |
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