LiTaO3 microcubes: the layered structure and the increased Curie temperature
| Autor: | Xin Xin Gong, Guang Tao Fei, Fa Di Li, Guo Liang Shang, Mao Liu, Li De Zhang, Ming Fang |
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| Rok vydání: | 2015 |
| Předmět: |
Materials science
General Chemical Engineering Mineralogy General Chemistry Dielectric Ferroelectricity Hydrothermal circulation Layered structure Pyroelectricity chemistry.chemical_compound symbols.namesake Chemical engineering chemistry Lithium tantalate symbols Curie temperature Raman spectroscopy |
| Zdroj: | RSC Advances. 5:31615-31621 |
| ISSN: | 2046-2069 |
| DOI: | 10.1039/c5ra03209a |
| Popis: | Lithium tantalate (LiTaO3) is a very important material with various outstanding properties. In this paper, a LiTaO3 microcube has been successfully synthesized using a hydrothermal method at 220 °C. The microcube is about 1 μm in diameter. The structure is characterized by FESEM, TEM and Raman investigation, and the results suggest that the microcube is constructed by nanolayers. To clarify the growth mechanism of the layered microcube, a time-dependent FESEM investigation is performed. Further investigation of PL, dielectric and ferroelectric properties indicate that there are lots of oxygen related defects among the layers, which is helpful for increasing the Curie temperature. The LiTaO3 microcubes show application potential to be used as a pyroelectric detector material with high performance. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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