Self-assembly growth of BiFeO3 powders prepared by microwave–hydrothermal method
| Autor: | Yu-Qin Zheng, Guoqiang Tan, Hongyan Miao, Hui-Jun Ren, Ao Xia |
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| Rok vydání: | 2011 |
| Předmět: |
Diffraction
Materials science Magnetism Mechanical Engineering Condensed Matter Physics Hydrothermal circulation Crystallography Chemical engineering Mechanics of Materials Transmission electron microscopy Phase (matter) General Materials Science Self-assembly Selected area diffraction High-resolution transmission electron microscopy |
| Zdroj: | Materials Letters. 65:1137-1140 |
| ISSN: | 0167-577X |
| DOI: | 10.1016/j.matlet.2011.01.026 |
| Popis: | With FeCl3·6H2O and Bi(NO3)3·5H2O powder as raw materials and KOH as a mineralizer, the pure phase BiFeO3 (BFO) powder was synthesized by microwave–hydrothermal (MH) method at 200 °C, with the reaction time as little as 30 min. The range of preparing the BFO powders had been summarized. The field emission scanning electron microscopy (FE-SEM) images revealed that the little BFO plate grew together forming rock sugar-like BFO powders, and then they grew further to form the mussel-like BFO powders. The transmission electron microscope (TEM) images also improved the self-assembly growth of BFO powders. The X-ray diffraction (XRD), the high resolution transmission electron microscopy (HRTEM) and the selected area electron diffraction (SAED) results indicated that the BFO powders grew along the [110] and [104] crystal orientation. The B–H loops of BFO indicated that the weak magnetism existed in the pure phase BFO powders. |
| Databáze: | OpenAIRE |
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