High-Concentration Na Doping of SrRuO3 and CaRuO3

被引：14

作者：

Seki, Hayato ^{[1
]}

Yamada, Ryuta ^{[1
]}

Saito, Takashi ^{[1
]}

Kennedy, Brendan J. ^{[2
]}

Shimakawa, Yuichi ^{[1
,3
]}

机构：

[1] Kyoto Univ, Inst Chem Res, Kyoto 6110011, Japan

[2] Univ Sydney, Sch Chem, Sydney, NSW 2006, Australia

[3] Japan Sci & Technol Agcy, CREST, Kyoto 6110011, Japan

来源：

INORGANIC CHEMISTRY | 2014年 / 53卷 / 09期

基金：

日本科学技术振兴机构; 澳大利亚研究理事会;

关键词：

TRANSPORT-PROPERTIES; TERNARY;

D O I：

10.1021/ic500265t

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The Na-doped perovskite-structure ruthenates Sr1-xNaxRuO3 and Ca1-yNayRuO3 were prepared by high-pressure synthesis, which enables us to go beyond the previously reported Na doping limits and substitute Na for over 50% of the Sr in SrRuO3 and the Ca in CaRuO3. Gradual and systematic changes in the crystal structures were observed, and the decreases in the Ru-O bond lengths confirmed the Na substitution at the A site caused hole doping to Ru4+ at the B site. In contrast to what has been previously reported, Sr1-xNaxRuO3 showed metallic conductivity. Magnetic properties were influenced by the Na substitution, but no long-range antiferromagnetic behavior was observed in Ca1-yNayRuO3.

引用

页码：4579 / 4584

页数：6

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