High-pressure X-ray near-edge absorption study of thallium rhenium oxide up to 10.86 GPa

J. M. Ablett; C. C. Kao; S. R. Shieh; H. K. Mao; M. Croft; T. A. Tyson

doi:10.1080/08957950310001615839

High-pressure X-ray near-edge absorption study of thallium rhenium oxide up to 10.86 GPa

J. M. Ablett, C. C. Kao, S. R. Shieh, H. K. Mao, M. Croft, T. A. Tyson

Physics

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

11 Scopus citations

Abstract

High-pressure X-ray near-edge absorption measurements have been performed on thallium rhenium oxide (TlReO₄) up to 10.86 GPa at room temperature and in a diamond-anvil cell. At ∼10 GPa, TlReO₄ undergoes a large volume collapse and a striking optical transition, changing from transparent to opaque. A model has been proposed by Jayaraman et al. that the high-pressure phase transition is associated with a charge transfer from the thallium to rhenium atom; Tl¹⁺(Re⁷⁺O₄) ^-1 → Tl³⁺(Re⁵⁺O₄)^-3 and an accompanying truly octahedral coordination of the rhenium atom with respect to the surrounding oxygen cage. In this article, we find a significant broadening of ∼1.5 eV of the white-line feature at the rhenium L ₃(2p_3/2 → 5d) absorption-edge above this transition, and no evidence for the proposed valence change.

Original language	English (US)
Pages (from-to)	471-476
Number of pages	6
Journal	High Pressure Research
Volume	23
Issue number	4
DOIs	https://doi.org/10.1080/08957950310001615839
State	Published - Dec 2003

All Science Journal Classification (ASJC) codes

Condensed Matter Physics

Keywords

Thallium rhenium oxide
X-ray absorption

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10.1080/08957950310001615839

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title = "High-pressure X-ray near-edge absorption study of thallium rhenium oxide up to 10.86 GPa",

abstract = "High-pressure X-ray near-edge absorption measurements have been performed on thallium rhenium oxide (TlReO4) up to 10.86 GPa at room temperature and in a diamond-anvil cell. At ∼10 GPa, TlReO4 undergoes a large volume collapse and a striking optical transition, changing from transparent to opaque. A model has been proposed by Jayaraman et al. that the high-pressure phase transition is associated with a charge transfer from the thallium to rhenium atom; Tl1+(Re7+O4) -1 → Tl3+(Re5+O4)-3 and an accompanying truly octahedral coordination of the rhenium atom with respect to the surrounding oxygen cage. In this article, we find a significant broadening of ∼1.5 eV of the white-line feature at the rhenium L 3(2p3/2 → 5d) absorption-edge above this transition, and no evidence for the proposed valence change.",

keywords = "Thallium rhenium oxide, X-ray absorption",

author = "Ablett, {J. M.} and Kao, {C. C.} and Shieh, {S. R.} and Mao, {H. K.} and M. Croft and Tyson, {T. A.}",

note = "Funding Information: The research was carried out at the National Synchrotron Light Source, Brookhaven National Laboratory, which is supported by the U.S. Department of Energy, Division of Materials Science and Division of Chemical Sciences, under Contract No. DE-ACO2-98CH10886. In addition, the research was partially supported by DOE-NNSA and NSF-EAR. We gratefully acknowledge Dr. J. C. Woicik for many helpful discussions.",

year = "2003",

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doi = "10.1080/08957950310001615839",

language = "English (US)",

volume = "23",

pages = "471--476",

journal = "High Pressure Research",

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T1 - High-pressure X-ray near-edge absorption study of thallium rhenium oxide up to 10.86 GPa

AU - Ablett, J. M.

AU - Kao, C. C.

AU - Shieh, S. R.

AU - Mao, H. K.

AU - Croft, M.

AU - Tyson, T. A.

N1 - Funding Information: The research was carried out at the National Synchrotron Light Source, Brookhaven National Laboratory, which is supported by the U.S. Department of Energy, Division of Materials Science and Division of Chemical Sciences, under Contract No. DE-ACO2-98CH10886. In addition, the research was partially supported by DOE-NNSA and NSF-EAR. We gratefully acknowledge Dr. J. C. Woicik for many helpful discussions.

PY - 2003/12

Y1 - 2003/12

N2 - High-pressure X-ray near-edge absorption measurements have been performed on thallium rhenium oxide (TlReO4) up to 10.86 GPa at room temperature and in a diamond-anvil cell. At ∼10 GPa, TlReO4 undergoes a large volume collapse and a striking optical transition, changing from transparent to opaque. A model has been proposed by Jayaraman et al. that the high-pressure phase transition is associated with a charge transfer from the thallium to rhenium atom; Tl1+(Re7+O4) -1 → Tl3+(Re5+O4)-3 and an accompanying truly octahedral coordination of the rhenium atom with respect to the surrounding oxygen cage. In this article, we find a significant broadening of ∼1.5 eV of the white-line feature at the rhenium L 3(2p3/2 → 5d) absorption-edge above this transition, and no evidence for the proposed valence change.

AB - High-pressure X-ray near-edge absorption measurements have been performed on thallium rhenium oxide (TlReO4) up to 10.86 GPa at room temperature and in a diamond-anvil cell. At ∼10 GPa, TlReO4 undergoes a large volume collapse and a striking optical transition, changing from transparent to opaque. A model has been proposed by Jayaraman et al. that the high-pressure phase transition is associated with a charge transfer from the thallium to rhenium atom; Tl1+(Re7+O4) -1 → Tl3+(Re5+O4)-3 and an accompanying truly octahedral coordination of the rhenium atom with respect to the surrounding oxygen cage. In this article, we find a significant broadening of ∼1.5 eV of the white-line feature at the rhenium L 3(2p3/2 → 5d) absorption-edge above this transition, and no evidence for the proposed valence change.

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KW - X-ray absorption

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High-pressure X-ray near-edge absorption study of thallium rhenium oxide up to 10.86 GPa

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