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
收藏
页码：S280 / S281
页数：2
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