NaIrO3 - A pentavalent post-perovskite

M. Bremholm; S. E. Dutton; P. W. Stephens; R. J. Cava

doi:10.1016/j.jssc.2011.01.028

NaIrO₃ - A pentavalent post-perovskite

M. Bremholm, S. E. Dutton, P. W. Stephens, R. J. Cava

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68 Scopus citations

Abstract

Sodium iridium (V) oxide, NaIrO_3, was synthesized by a high pressure solid state method and recovered to ambient conditions. It is found to be isostructural with CaIrO₃, the much-studied structural analog of the high-pressure post-perovskite phase of MgSiO₃. Among the oxide post-perovskites, NaIrO₃ is the first example with a pentavalent cation. The structure consists of layers of corner- and edge-sharing IrO ₆ octahedra separated by layers of NaO₈ bicapped trigonal prisms. NaIrO₃ shows no magnetic ordering and resistivity measurements show non-metallic behavior. The crystal structure, electrical and magnetic properties are discussed and compared to known post-perovskites and pentavalent perovskite metal oxides.

Original language	English (US)
Pages (from-to)	601-607
Number of pages	7
Journal	Journal of Solid State Chemistry
Volume	184
Issue number	3
DOIs	https://doi.org/10.1016/j.jssc.2011.01.028
State	Published - Mar 3 2011

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Condensed Matter Physics
Physical and Theoretical Chemistry
Inorganic Chemistry
Materials Chemistry

Keywords

Electronic properties
High oxidation state
High pressure synthesis
NaIrO
Post-perovskite
Rietveld refinement

Access to Document

10.1016/j.jssc.2011.01.028

Cite this

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title = "NaIrO3 - A pentavalent post-perovskite",

abstract = "Sodium iridium (V) oxide, NaIrO3, was synthesized by a high pressure solid state method and recovered to ambient conditions. It is found to be isostructural with CaIrO3, the much-studied structural analog of the high-pressure post-perovskite phase of MgSiO3. Among the oxide post-perovskites, NaIrO3 is the first example with a pentavalent cation. The structure consists of layers of corner- and edge-sharing IrO 6 octahedra separated by layers of NaO8 bicapped trigonal prisms. NaIrO3 shows no magnetic ordering and resistivity measurements show non-metallic behavior. The crystal structure, electrical and magnetic properties are discussed and compared to known post-perovskites and pentavalent perovskite metal oxides.",

keywords = "Electronic properties, High oxidation state, High pressure synthesis, NaIrO, Post-perovskite, Rietveld refinement",

author = "M. Bremholm and Dutton, {S. E.} and Stephens, {P. W.} and Cava, {R. J.}",

note = "Funding Information: Funding for this research was provided primarily by the NSF Solid State Chemistry program, grant DMR 0703095 . Use of the National Synchrotron Light Source, Brookhaven National Laboratory, was supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences , under Contract No. DE-AC02-98CH10886 . M. Bremholm gratefully acknowledges funding from the Villum Kann Rasmussen foundation. ",

year = "2011",

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doi = "10.1016/j.jssc.2011.01.028",

language = "English (US)",

volume = "184",

pages = "601--607",

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T1 - NaIrO3 - A pentavalent post-perovskite

AU - Bremholm, M.

AU - Dutton, S. E.

AU - Stephens, P. W.

AU - Cava, R. J.

N1 - Funding Information: Funding for this research was provided primarily by the NSF Solid State Chemistry program, grant DMR 0703095 . Use of the National Synchrotron Light Source, Brookhaven National Laboratory, was supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences , under Contract No. DE-AC02-98CH10886 . M. Bremholm gratefully acknowledges funding from the Villum Kann Rasmussen foundation.

PY - 2011/3/3

Y1 - 2011/3/3

N2 - Sodium iridium (V) oxide, NaIrO3, was synthesized by a high pressure solid state method and recovered to ambient conditions. It is found to be isostructural with CaIrO3, the much-studied structural analog of the high-pressure post-perovskite phase of MgSiO3. Among the oxide post-perovskites, NaIrO3 is the first example with a pentavalent cation. The structure consists of layers of corner- and edge-sharing IrO 6 octahedra separated by layers of NaO8 bicapped trigonal prisms. NaIrO3 shows no magnetic ordering and resistivity measurements show non-metallic behavior. The crystal structure, electrical and magnetic properties are discussed and compared to known post-perovskites and pentavalent perovskite metal oxides.

AB - Sodium iridium (V) oxide, NaIrO3, was synthesized by a high pressure solid state method and recovered to ambient conditions. It is found to be isostructural with CaIrO3, the much-studied structural analog of the high-pressure post-perovskite phase of MgSiO3. Among the oxide post-perovskites, NaIrO3 is the first example with a pentavalent cation. The structure consists of layers of corner- and edge-sharing IrO 6 octahedra separated by layers of NaO8 bicapped trigonal prisms. NaIrO3 shows no magnetic ordering and resistivity measurements show non-metallic behavior. The crystal structure, electrical and magnetic properties are discussed and compared to known post-perovskites and pentavalent perovskite metal oxides.

KW - Electronic properties

KW - High oxidation state

KW - High pressure synthesis

KW - NaIrO

KW - Post-perovskite

KW - Rietveld refinement

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