Local crystal structure of multiferroic system BiMnO3 by atomic pair distribution function analysis

被引：22

作者：

Kodama, Katsuaki ^{[1
]}

Iikubo, Satoshi ^{[1
]}

Shamoto, Shin-Ichi ^{[1
]}

Belik, Alexei A. ^{[2
]}

Takayama-Muromachi, Eiji ^{[2
]}

机构：

[1] Japan Atom Energy Agcy, Quantum Beam Directorate, Tokai, Ibaraki 3191195, Japan

[2] Natl Inst Mat Sci, Adv Nano Mat Lab, Tsukuba, Ibaraki 3050044, Japan

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2007年 / 76卷 / 12期

关键词：

PDF analysis; neutron diffraction; local structure; BiMnO3; multiferroic system;

D O I：

10.1143/JPSJ.76.124605

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have studied the local crystal structure of a multiferroic system BiMnO3 by means of atomic pair distibution function (PDF) analysis on neutron powder diffraction data. The domains with space group P2 or P2(1) whose atomic shifts break a symmetry of C-center exist in the bulk BiMnO3 with a space group C2, which is consistent with recent results of electron diffraction. The domain size is larger than 100 (A) over circle, also estimated by the PDF analysis. Because domains which have atomic shifts with different directions, typically the opposite direction, also exist, the bulk material "apparently" has a space group C2.

引用

页数：7

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