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- W4320920460 abstract "Abstract 2D ferroelectrics provide great promise for future electronics owing to their unique properties at 2D limit. Although simple perovskite oxides (such as BaTiO 3 and PbTiO 3 ) are an important target for 2D ferroelectrics, controlled synthesis of 2D nanosheets still remains a challenge. Here, this issue is addressed by using a new chemical protocol; unilamellar Ti 0.87 O 2 nanosheets can serve as templates, guiding the solvothermal synthesis of 2D BaTiO 3 nanosheets with a molecularly thin thickness (< 3 nm). Raman spectroscopy, second‐harmonic generation, and transmission electron microscopy characterizations suggest the formation of tetragonal ferroelectric BaTiO 3 nanosheets. Based on piezoresponse force microscopy, BaTiO 3 nanosheets exhibit a clear ferroelectric response with a high Curie temperature (≈100 °C) even down to 1.8 nm thickness. This study provides new opportunities to investigate perovskite ferroelectrics with the critical thickness." @default.
- W4320920460 created "2023-02-16" @default.
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- W4320920460 date "2023-02-14" @default.
- W4320920460 modified "2023-10-18" @default.
- W4320920460 title "Molecularly Thin BaTiO<sub>3</sub> Nanosheets with Stable Ferroelectric Response" @default.
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- W4320920460 doi "https://doi.org/10.1002/aelm.202201239" @default.
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