NaIrO3-A pentavalent post-perovskite

被引：73

作者：

Bremholm, M. ^{[1
]}

Dutton, S. E. ^{[1
]}

Stephens, P. W. ^{[2
]}

Cava, R. J. ^{[1
]}

机构：

[1] Princeton Univ, Dept Chem, Princeton, NJ 08544 USA

[2] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 2011年 / 184卷 / 03期

基金：

美国国家科学基金会;

关键词：

Post-perovskite; NaIrO3; High oxidation state; High pressure synthesis; Rietveld refinement; Electronic properties; PHASE-TRANSITION; IRIDIUM(VI) OXIDES; CRYSTAL-STRUCTURE; PRESSURE; CHALCOGENIDES; DISTANCES; CAPTO3; MGSIO3; STATE;

D O I：

10.1016/j.jssc.2011.01.028

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

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 IrO6 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. Published by Elsevier Inc.

引用

页码：601 / 607

页数：7

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