Bismuth manganese titanate: Crystal structure and properties

被引：13
|
作者：
Piir, I. V. [1 ]
Sekushin, N. A. [1 ]
Grass, V. E. [1 ]
Ryabkov, Y. I. [1 ]
Chezhina, N. V. [2 ]
Nekipelov, S. V. [3 ]
Sivkov, V. N. [4 ]
Vyalikh, D. V. [5 ]
机构：
[1] Inst Chem Komi Sci Ctr UB RAS, Syktyvkar 167982, Russia
[2] St Petersburg State Univ, St Petersburg, Russia
[3] Komi Pedag Inst, Syktyvkar 167982, Russia
[4] Komi Sci Ctr UB RAS, Dept Math, Syktyvkar 167982, Russia
[5] Tech Univ Dresden, D-01062 Dresden, Germany
来源：
SOLID STATE IONICS | 2012年 / 225卷
关键词：
Pyrochlore; Bismuth manganese titanate; Bi-Mn-Ti-O; NEXAFS; Magnetic behavior; Electrical properties; FERROELECTRICITY; PYROCHLORES;
D O I：
10.1016/j.ssi.2012.02.051
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Manganese-containing bismuth titanate solid solutions with a pyrochlore-type crystal structure were obtained by the ceramic technique over a wide range of compositions. The NEXAFS (near-edge X-ray absorption fine structure) spectra of Mn2p-absorption in bismuth manganese titanate pyrochlores point to manganese being mainly in the oxidation state +2 in these solid solutions. The Mn-rich bismuth titanate pyrochlores showed a superposition of antiferro- (long-order) and ferromagnetic (short-order) behavior. The results of impedance investigations show the electron-ionic conductivity in these samples. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：464 / 470
页数：7
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