Structural features of layered iron pnictide oxides (Fe2As2)(Sr4M2O6)

被引：16

作者：

Ogino, H. ^{[1
,2
]}

Sato, S. ^{[1
,2
]}

Matsumura, Y. ^{[1
,2
]}

Kawaguchi, N. ^{[1
,2
]}

Ushiyama, K. ^{[1
,2
]}

Katsura, Y. ^{[3
]}

Horii, S. ^{[2
,4
]}

Kishio, K. ^{[1
,2
]}

Shimoyama, J. ^{[1
,2
]}

机构：

[1] Univ Tokyo, Dept Appl Chem, Bunkyo Ku, Tokyo 1138656, Japan

[2] JST TRIP, Chiyoda Ku, Sanban, Tokyo 1020075, Japan

[3] RIKEN, Magnet Mat Lab, Wako, Saitama 3510198, Japan

[4] Kochi Univ Technol, Kochi 7828502, Japan

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2010年 / 470卷

关键词：

Perovskite structure; Iron pnictide; Superconductor;

D O I：

10.1016/j.physc.2009.10.099

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Structural features of newly found perovskite-based iron pnictide oxide system have been studied. Compared to REFePnO system, perovskite-based system tend to have smaller Pn-Fe-Pn angle and higher pnictogen height owing to low electronegativity of alkaline earth metal and small repulsive force between pnictogen and oxigen atoms. As-Fe-As angles of (Fe2As2)(Sr4Cr2O6), (Fe2As2)(Sr4V2O6) and (Fe(2)Pn(2))(Sr4MgTiO6) are close to ideal tetrahedron and those pnictogen heights of about 1.40 A are close to NdFeAsO with optimized carrier concentration. These structural features of this system may lead to realization of high-T-c superconductivity in this system. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：S280 / S281

页数：2

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