Ferroelectricity in SrTiO3 nanocrystalline disks |
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| Authors: | Li Sun Minglei Zhao Hongwei Qin |
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| Affiliation: | School of Physics, State Key Laboratory for Crystal Materials, Shandong University, Jinan 250100, China |
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| Abstract: | SrTiO3 and CaTiO3 conventional bulk materials are incipient ferroelectrics. In this note, we report for the first time that ferroelectricity could occur in SrTiO3 nanocrystalline disks even at room temperature. The peak in the temperature dependence of permittivity for a CaTiO3 nanocrystalline disk at a low temperature is also observed. The observed ferroelectricity (or permittivity peak) in SrTiO3 (or CaTiO3) nanocrystalline disks could be attributed to the strain effect. |
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| Keywords: | A. Nanocrystalline D. Ferroelectricity E. Sol-gel method |
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