| Budget Amount *help |
¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2019: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2018: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
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| Outline of Final Research Achievements |
In this research project, we have carried out hydrothermal synthesis and atomic-resolution scanning transmission electron microscopy studies, aiming to develop new ferroelectric nanoparticles. We have succeeded producing hafnium dioxide, zirconium dioxide, and hafnium-zirconium dioxide nanoparticles with good crystal qualities and a single phase. Furthermore, we have developed a new methodology, two-step affine transformation method, to reduce an error in lattice parameters measured by atomic-resolution scanning transmission electron microscopy. Development of the method is reported in a couple of papers (Sato et al., Phys. Status Solidi, 2019 and Fujinaka et al., J. Mater. Sci., 2020) so far. A part of this method is applied to characterize atomic-scale polarization behavior in a barium titanate nanoparticle, which successfully visualized the depth-sectional multi-domain structure in the particle (Sato et al., ACS Appl. Nanomater., 2019.).
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