Centrosymmetric crystal structure of BiMnO3 studied by transmission electron microscopy and theoretical simulations

作者：Yang H^*; Chi Z H; Jiang J L; Feng W J; Cao Z E; Xian T; Jin C Q; Yu R C

来源：Journal of Alloys and Compounds, 2008, 461(1-2): 1-5.

DOI：10.1016/j.jallcom.2007.06.085

• multiferroics
• BiMnO3
• crystal structure and symmetry
• transmission electron microscopy

In this paper, electron diffraction (ED), high-resolution transmission electron microscopy (HRTEM), and theoretical simulations have been used to study the room-temperature structure of the multiferroic BiMnO3 synthesized under high pressure. The electron diffraction data reveal that BiMnO3 crystallizes in the centrosymmetric C2/c structure, not in the non-centrosymmetric C2 structure. This is confirmed by further calculations of ED patterns and FIRTEM images. The present work is very important for the further studies of BiMnO3.

• 出版日期2008-8-11
• 单位兰州理工大学