Search for new modulations in the BiFeO3 structure:: SR diffraction and Mossbauer studies

被引：84

作者：

Palewicz, A.

Szumiata, T.

Przenioslo, R.

Sosnowska, I.

Margiolaki, I.

机构：

[1] Univ Warsaw, Inst Expt Phys, PL-00681 Warsaw, Poland

[2] Tech Univ Radom, Dept Phys, PL-26600 Radom, Poland

[3] European Synchrotron Radiat Facil, F-38043 Grenoble, France

来源：

SOLID STATE COMMUNICATIONS | 2006年 / 140卷 / 7-8期

关键词：

multiferroics; SR diffraction; Mossbauer spectroscopy;

D O I：

10.1016/j.ssc.2006.08.046

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

High resolution synchrotron radiation (SR) diffraction does not show any sign of charge ordering nor any crystal symmetry breaking in BiFeO3 at temperatures from 5 K up to 1000 K. The temperature dependence of the BiFeO3 lattice parameters shows a local minimum of the rhombohedral angle alpha(rh) around T-N suggesting a strong spin-lattice coupling. Mossbauer spectroscopy studies support the magnetic modulation of the hyperfine fields observed by NMR which are related to the modulated Fe3+ magnetic moments ordering observed by neutron diffraction. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：359 / 363

页数：5

共 26 条

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