Pressure induced valence and structural phase transition in Ba 2PrRu0.8Ir0.2O6

Brendan J. Kennedy; Leqing Li; Yongjae Lee; Thomas Vogt

doi:10.1088/0953-8984/16/18/029

Pressure induced valence and structural phase transition in Ba ₂PrRu_0.8Ir_0.2O₆

Brendan J. Kennedy, Leqing Li, Yongjae Lee, Thomas Vogt

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11 Citations (Scopus)

Abstract

The crystal structure of the ordered double perovskite Ba ₂PrRu_0.8Ir_0.2O₆ was investigated as a function of pressure at room temperature. High-resolution synchrotron powder diffraction measurements have revealed the occurrence of a first order phase transition at a critical pressure of about 0.5 GPa. Structural refinements indicate that Ba₂PrRu_0.8Ir_0.2O₆ transforms from an ambient pressure monoclinic (P2₁/n) to a high-pressure tetragonal (P4/mnc) structure. The transition is consistent with a valence change of the Pr ions.

Original language	English
Pages (from-to)	3295-3301
Number of pages	7
Journal	Journal of Physics Condensed Matter
Volume	16
Issue number	18
DOIs	https://doi.org/10.1088/0953-8984/16/18/029
Publication status	Published - 2004 May 12

All Science Journal Classification (ASJC) codes

Materials Science(all)
Condensed Matter Physics

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abstract = "The crystal structure of the ordered double perovskite Ba 2PrRu0.8Ir0.2O6 was investigated as a function of pressure at room temperature. High-resolution synchrotron powder diffraction measurements have revealed the occurrence of a first order phase transition at a critical pressure of about 0.5 GPa. Structural refinements indicate that Ba2PrRu0.8Ir0.2O6 transforms from an ambient pressure monoclinic (P21/n) to a high-pressure tetragonal (P4/mnc) structure. The transition is consistent with a valence change of the Pr ions.",

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T1 - Pressure induced valence and structural phase transition in Ba 2PrRu0.8Ir0.2O6

AU - Kennedy, Brendan J.

AU - Li, Leqing

AU - Lee, Yongjae

AU - Vogt, Thomas

PY - 2004/5/12

Y1 - 2004/5/12

N2 - The crystal structure of the ordered double perovskite Ba 2PrRu0.8Ir0.2O6 was investigated as a function of pressure at room temperature. High-resolution synchrotron powder diffraction measurements have revealed the occurrence of a first order phase transition at a critical pressure of about 0.5 GPa. Structural refinements indicate that Ba2PrRu0.8Ir0.2O6 transforms from an ambient pressure monoclinic (P21/n) to a high-pressure tetragonal (P4/mnc) structure. The transition is consistent with a valence change of the Pr ions.

AB - The crystal structure of the ordered double perovskite Ba 2PrRu0.8Ir0.2O6 was investigated as a function of pressure at room temperature. High-resolution synchrotron powder diffraction measurements have revealed the occurrence of a first order phase transition at a critical pressure of about 0.5 GPa. Structural refinements indicate that Ba2PrRu0.8Ir0.2O6 transforms from an ambient pressure monoclinic (P21/n) to a high-pressure tetragonal (P4/mnc) structure. The transition is consistent with a valence change of the Pr ions.

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JO - Journal of Physics Condensed Matter

JF - Journal of Physics Condensed Matter

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ER -

Pressure induced valence and structural phase transition in Ba ₂PrRu_0.8Ir_0.2O₆

Abstract

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