Comment on "high-pressure synthesis of orthorhombic SrIrO3 perovskite and its positive magnetoresistance" [J. Appl. Phys. 103, 103706 (2008)]

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In their article, Zhao et al. report the synthesis of SrIrO3 at high temperature and high pressure [J. Appl. Phys. 103, 103706 (2008)]. Under these conditions, the crystal structure of SrIrO3 can be stabilized as an orthorhombic perovskite with space group Pnma. They refine the lattice parameters and list the Wyckoff orbits and atomic coordinates. We believe that Zhao and coworkers made an unintentional error in reporting the crystal structure, which may adversely affect the description of the electronic structure. Indeed, we show the reported structure does not define a standard perovskite with nearly rigid IrO6 octahedral tilts and rather exhibits a structural discrepancy with respect to the equilibrium structure obtained from density functional calculations.

Original languageEnglish (US)
Article number086102
JournalJournal of Applied Physics
Issue number8
StatePublished - Feb 28 2016

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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