The hydrothermal synthesis and formation mechanism of single-crystalline perovskite BiFeO3 microplates with dominant (012) facets

• Main Authors: Yang, Xin, Xu, Gang, Ren, Zhaohui, Wei, Xiao, Chao, Chunying, Gong, Siyu, Shen, Ge, Han, Gaorong
• Format: Journal Article
• Language: English
• Published: 01.01.2014
• ISSN: 1466-8033
• DOI: 10.1039/c3ce42488j

A facile hydrothermal method has been developed to prepare single-crystal BiFeO 3 (BFO) microplates, where the raw material (C 6 H 10 BiNO 8 ) was used both as a reactant and a surface modifier. The as-synthesised BFO microplates were dominated by (012) facets with the lateral length of 8 μm and thickness of 510-550 μm. The results of XRD, SEM, TEM, HRTEM and FT-IR indicate that the adsorption behaviour of the organic ligands could play a key role in the formation of the BFO microplates. Moreover, the dielectric constant of the BFO-PVDF film is much higher than the pure BFO at room temperature. The specially chosen raw material (C 6 H 10 BiNO 8 ) and the proposed formation mechanism of the BFO microplates could be extended to tailor the crystal growth of the 2D structures of other perovskite oxides. Single-crystal BiFeO 3 (BFO) microplates with dominant (012) facets were successfully synthesized by a facile one-pot hydrothermal method. The adsorption behaviour of the organic ligands may play a key role in the formation of the BFO microplates.