The Synthesis and Domain Structures of Single-Crystal-Like Mesoscale BaTiO<sub>3</sub> Plates
The (001) plate-like BaTiO<sub>3</sub> piezoelectric micromaterials are synthesized by topochemical microcrystal conversion technique. BaTiO<sub>3</sub> plates with a length of 2~10 μm and thickness of 0.5~1.3 μm are obtained. The dependence of morphology on synthesis conditi...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-03-01
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| Series: | Crystals |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2073-4352/13/3/538 |
| Summary: | The (001) plate-like BaTiO<sub>3</sub> piezoelectric micromaterials are synthesized by topochemical microcrystal conversion technique. BaTiO<sub>3</sub> plates with a length of 2~10 μm and thickness of 0.5~1.3 μm are obtained. The dependence of morphology on synthesis conditions is discussed in detail. The crystal symmetry and multiscale domain structures of BaTiO<sub>3</sub> plates are systematically investigated by various characterizations. X-ray diffraction (XRD) and Raman spectra analyses demonstrate the tetragonal symmetry of the (001) oriented BaTiO<sub>3</sub> plates at room temperature. The domain configurations of the micron BaTiO<sub>3</sub> are investigated with a polarized light microscope (PLM) and piezoresponse force microscopy (PFM). The single-crystal-like quality and uniformity are supported by PLM observations. More importantly, the classical 90° banded ferroelectric domains of ~125 nm width are observed for the first time in such BaTiO<sub>3</sub> plates. The domain features in the mesoscale BaTiO<sub>3</sub> plate are discussed and compared with its bulk counterparts. The results may provide insights into understanding and designing the mesoscale BaTiO<sub>3</sub> functional materials. |
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| ISSN: | 2073-4352 |