Atomic imaging of the coherent interface between orientedly-attached Mn3O4 nanoparticles

作者：Zheng, Jing-xu; Yuan, Rui; Luo, Rui-chun; Chen, Bin^*

来源：Materials Characterization, 2016, 117: 144-148.

DOI：10.1016/j.matchar.2016.04.026

• Oriented attachment
• Mn3O4
• Nanoparticles
• HAADF-STEM
• Interface

In this paper, coherent interfaces between orientedly-attached (OA) Mn3O4 nanoparticles are fully reconstructed based on atomic-scale high angle annular dark field (HAADF) - scanning transmission electron microscopy (STEM) direct imaging technique. According to the characterization, five characteristics of the oriented attachment between Mn3O4 are proposed: (1) [100](Mn3O4) direction sharing; (2) crystallographic plane sharing for every two attached particles; (3) preference for O2- close-packed crystallographic planes to form the OA interface; (4) "defect transfers" compensating the deviation between the macroscopic interface and the atomic interface; (5) possible chemical state changes of the interfacial atoms.

• 出版日期2016-7
• 单位上海交通大学