Investigation of the Less Oxygen Deficient SrFeO3-δ

被引：3

作者：

Manimuthu, P. ^{[1
]}

Joseph, D. Paul ^{[2
]}

Raja, S. Philip ^{[1
]}

Kovendhan, M. ^{[3
]}

Venkateswaran, C. ^{[1
]}

机构：

[1] Univ Madras, Dept Nucl Phys, Ctr Mat Sci, Guindy Campus, Madras 600025, Tamil Nadu, India

[2] Natl Taiwan Univ, Ctr Condensed Mat Sci, Taipei 10617, Taiwan

[3] Presidency Coll, Dept Phys, Madras 600005, Tamil Nadu, India

来源：

SOLID STATE PHYSICS: PROCEEDINGS OF THE 55TH DAE SOLID STATE PHYSICS SYMPOSIUM 2010, PTS A AND B | 2011年 / 1349卷

关键词：

SrFeO3; oxygen deficiency; metal-semiconductor transition and dielectric constant;

D O I：

10.1063/1.3606286

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Perovskite type SrFeO3 is a suitable candidate for gas sensors and catalytic applications. It is very difficult to stabilize the stoichiometric SrFeO3, which is highly unstable because of the presence of Fe4+ ions that leads to the oxygen vacancies (delta) in order to maintain charge equilibrium. For delta = 0, 0.13, 0.27 and 0.5, it takes SrFeO3, SrFeO2.87, SrFeO2.73 and SrFeO2.5 phases respectively. The oxygen vacancy plays an important role in determining its structural and electronic properties. Nanocrystalline SrFeO3 has been prepared by thermal decomposition method and its structural, morphological, magnetic and electrical properties are analyzed.

引用

页码：1181 / +

页数：2

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