Pd2+-incorporated perovskite CaPd3 B 4O12 (B = Ti, V)

Kentaro Shiro; Ikuya Yamada; Naoya Ikeda; Kenya Ohgushi; Masaichiro Mizumaki; Ryoji Takahashi; Norimasa Nishiyama; Toru Inoue; Tetsuo Irifune

doi:10.1021/ic3025155

Pd²⁺-incorporated perovskite CaPd₃ B ₄O₁₂ (B = Ti, V)

Kentaro Shiro, Ikuya Yamada, Naoya Ikeda, Kenya Ohgushi, Masaichiro Mizumaki, Ryoji Takahashi, Norimasa Nishiyama, Toru Inoue, Tetsuo Irifune

SCI - Physics

Research output: Contribution to journal › Article › peer-review

37 Citations (Scopus)

Abstract

Novel A-site ordered perovskites CaPd₃Ti₄O ₁₂ and CaPd₃V₄O₁₂ were synthesized under high-pressure and high-temperature of 15 GPa and 1000 °C. These compounds are the first example in which a crystallographic site in a perovskite-type structure is occupied by Pd²⁺ ions with a 4d ⁸ low spin configuration. The ionic models for these compounds were determined to be Ca²⁺Pd²⁺₃Ti⁴⁺ ₄O₁₂ and Ca²⁺Pd²⁺₃V ⁴⁺₄O₁₂ by structural refinement using synchrotron X-ray powder diffraction, hard X-ray photoemission, and soft X-ray absorption spectroscopy. Magnetic susceptibility, electrical resistivity, and specific heat measurements demonstrated diamagnetic insulating behavior for CaPd₃Ti₄O₁₂ in contrast to the Pauli-paramagnetic metallic nature of CaPd₃V₄O ₁₂.

Original language	English
Pages (from-to)	1604-1609
Number of pages	6
Journal	Inorganic Chemistry
Volume	52
Issue number	3
DOIs	https://doi.org/10.1021/ic3025155
Publication status	Published - 2013 Feb 4

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title = "Pd2+-incorporated perovskite CaPd3 B 4O12 (B = Ti, V)",

abstract = "Novel A-site ordered perovskites CaPd3Ti4O 12 and CaPd3V4O12 were synthesized under high-pressure and high-temperature of 15 GPa and 1000 °C. These compounds are the first example in which a crystallographic site in a perovskite-type structure is occupied by Pd2+ ions with a 4d 8 low spin configuration. The ionic models for these compounds were determined to be Ca2+Pd2+3Ti4+ 4O12 and Ca2+Pd2+3V 4+4O12 by structural refinement using synchrotron X-ray powder diffraction, hard X-ray photoemission, and soft X-ray absorption spectroscopy. Magnetic susceptibility, electrical resistivity, and specific heat measurements demonstrated diamagnetic insulating behavior for CaPd3Ti4O12 in contrast to the Pauli-paramagnetic metallic nature of CaPd3V4O 12.",

author = "Kentaro Shiro and Ikuya Yamada and Naoya Ikeda and Kenya Ohgushi and Masaichiro Mizumaki and Ryoji Takahashi and Norimasa Nishiyama and Toru Inoue and Tetsuo Irifune",

year = "2013",

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doi = "10.1021/ic3025155",

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volume = "52",

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TY - JOUR

T1 - Pd2+-incorporated perovskite CaPd3 B 4O12 (B = Ti, V)

AU - Shiro, Kentaro

AU - Yamada, Ikuya

AU - Ikeda, Naoya

AU - Ohgushi, Kenya

AU - Mizumaki, Masaichiro

AU - Takahashi, Ryoji

AU - Nishiyama, Norimasa

AU - Inoue, Toru

AU - Irifune, Tetsuo

PY - 2013/2/4

Y1 - 2013/2/4

N2 - Novel A-site ordered perovskites CaPd3Ti4O 12 and CaPd3V4O12 were synthesized under high-pressure and high-temperature of 15 GPa and 1000 °C. These compounds are the first example in which a crystallographic site in a perovskite-type structure is occupied by Pd2+ ions with a 4d 8 low spin configuration. The ionic models for these compounds were determined to be Ca2+Pd2+3Ti4+ 4O12 and Ca2+Pd2+3V 4+4O12 by structural refinement using synchrotron X-ray powder diffraction, hard X-ray photoemission, and soft X-ray absorption spectroscopy. Magnetic susceptibility, electrical resistivity, and specific heat measurements demonstrated diamagnetic insulating behavior for CaPd3Ti4O12 in contrast to the Pauli-paramagnetic metallic nature of CaPd3V4O 12.

AB - Novel A-site ordered perovskites CaPd3Ti4O 12 and CaPd3V4O12 were synthesized under high-pressure and high-temperature of 15 GPa and 1000 °C. These compounds are the first example in which a crystallographic site in a perovskite-type structure is occupied by Pd2+ ions with a 4d 8 low spin configuration. The ionic models for these compounds were determined to be Ca2+Pd2+3Ti4+ 4O12 and Ca2+Pd2+3V 4+4O12 by structural refinement using synchrotron X-ray powder diffraction, hard X-ray photoemission, and soft X-ray absorption spectroscopy. Magnetic susceptibility, electrical resistivity, and specific heat measurements demonstrated diamagnetic insulating behavior for CaPd3Ti4O12 in contrast to the Pauli-paramagnetic metallic nature of CaPd3V4O 12.

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JO - Inorganic Chemistry

JF - Inorganic Chemistry

IS - 3

ER -

Pd²⁺-incorporated perovskite CaPd₃ B ₄O₁₂ (B = Ti, V)

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