Intermetallic Charge Transfer in V-Substituted PbCrO3

Takahiro Ogata; Yuki Sakai; Takumi Nishikubo; Takashi Mizokawa; Masaichiro Mizumaki; Koomok Lee; Qiumin Liu; Masaki Azuma

doi:10.1021/acs.inorgchem.1c00460

Intermetallic Charge Transfer in V-Substituted PbCrO₃

Takahiro Ogata^*, Yuki Sakai, Takumi Nishikubo, Takashi Mizokawa, Masaichiro Mizumaki, Koomok Lee, Qiumin Liu, Masaki Azuma

^*この研究の対応する著者

先進理工学部

研究成果: Article › 査読

1 被引用数 (Scopus)

抄録

PbCrO3 features an unusual charge distribution Pb0.52+Pb0.54+Cr3+O3 with Pb charge disproportionation at ambient pressure. A charge transfer between Pb and Cr is induced by the application of pressure resulting in Pb2+Cr4+O3 charge distribution and a large volume collapse. Here, structural and charge distribution changes in PbCr1-xVxO3 are investigated. Despite a cubic crystal structure in 0 ≤ x ≤ 0.60, discontinuous reduction in the unit cell volume was observed between x = 0.35 and 0.40. Hard X-ray photoemission spectroscopy confirmed the change in Pb charge state from the coexisting Pb2+ and Pb4+ at x = 0.35 to single Pb2+ at x = 0.40. This indicates that V substitution stabilizes the high pressure cubic Pb2+Cr4+O3-Type phase. With further increase in the V substitution, the PbVO3-Type polar tetragonal phase appeared at x = 0.80.

本文言語	English
ページ（範囲）	9427-9431
ページ数	5
ジャーナル	Inorganic Chemistry
巻	60
号	13
DOI	https://doi.org/10.1021/acs.inorgchem.1c00460
出版ステータス	Published - 2021 7月 5

ASJC Scopus subject areas

物理化学および理論化学
無機化学

文献へのアクセス

10.1021/acs.inorgchem.1c00460

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引用スタイル

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abstract = "PbCrO3 features an unusual charge distribution Pb0.52+Pb0.54+Cr3+O3 with Pb charge disproportionation at ambient pressure. A charge transfer between Pb and Cr is induced by the application of pressure resulting in Pb2+Cr4+O3 charge distribution and a large volume collapse. Here, structural and charge distribution changes in PbCr1-xVxO3 are investigated. Despite a cubic crystal structure in 0 ≤ x ≤ 0.60, discontinuous reduction in the unit cell volume was observed between x = 0.35 and 0.40. Hard X-ray photoemission spectroscopy confirmed the change in Pb charge state from the coexisting Pb2+ and Pb4+ at x = 0.35 to single Pb2+ at x = 0.40. This indicates that V substitution stabilizes the high pressure cubic Pb2+Cr4+O3-Type phase. With further increase in the V substitution, the PbVO3-Type polar tetragonal phase appeared at x = 0.80.",

author = "Takahiro Ogata and Yuki Sakai and Takumi Nishikubo and Takashi Mizokawa and Masaichiro Mizumaki and Koomok Lee and Qiumin Liu and Masaki Azuma",

note = "Funding Information: This work was partially supported by JSPS KAKENHI JP18H05208 and JP19H05625 and the Kanagawa Institute of Industrial Science and Technology (KISTEC). The synchrotron radiation experiments were performed at SPring-8 with the approval of the Japan Synchrotron Radiation Research Institute (2018A1667 and 2018B1672). Publisher Copyright: {\textcopyright} ",

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AU - Ogata, Takahiro

AU - Sakai, Yuki

AU - Nishikubo, Takumi

AU - Mizokawa, Takashi

AU - Mizumaki, Masaichiro

AU - Lee, Koomok

AU - Liu, Qiumin

AU - Azuma, Masaki

N1 - Funding Information: This work was partially supported by JSPS KAKENHI JP18H05208 and JP19H05625 and the Kanagawa Institute of Industrial Science and Technology (KISTEC). The synchrotron radiation experiments were performed at SPring-8 with the approval of the Japan Synchrotron Radiation Research Institute (2018A1667 and 2018B1672). Publisher Copyright: ©

PY - 2021/7/5

Y1 - 2021/7/5

N2 - PbCrO3 features an unusual charge distribution Pb0.52+Pb0.54+Cr3+O3 with Pb charge disproportionation at ambient pressure. A charge transfer between Pb and Cr is induced by the application of pressure resulting in Pb2+Cr4+O3 charge distribution and a large volume collapse. Here, structural and charge distribution changes in PbCr1-xVxO3 are investigated. Despite a cubic crystal structure in 0 ≤ x ≤ 0.60, discontinuous reduction in the unit cell volume was observed between x = 0.35 and 0.40. Hard X-ray photoemission spectroscopy confirmed the change in Pb charge state from the coexisting Pb2+ and Pb4+ at x = 0.35 to single Pb2+ at x = 0.40. This indicates that V substitution stabilizes the high pressure cubic Pb2+Cr4+O3-Type phase. With further increase in the V substitution, the PbVO3-Type polar tetragonal phase appeared at x = 0.80.

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