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

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

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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.

Original languageEnglish
Pages (from-to)3295-3301
Number of pages7
JournalJournal of Physics Condensed Matter
Volume16
Issue number18
DOIs
Publication statusPublished - 2004 May 12

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All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics

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