Goki Kimura
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Goki Kimura has a total of 4 co-authors. Here are the top co-authors by number of shared publications:
- Goon Tan
Division of Physics, Faculty of Liberal Arts, Sciences and Global Education, Osaka Metropolitan University, Osaka, Japan
1 shared publication - Isaku Kanno
Kobe University
1 shared publication - Sang Hyo Kweon
Department of Mechanical Engineering, Kobe University, Kobe, Japan
1 shared publication - Yukio Sato
Research and Education Institute for Semiconductors and Informatics Kumamoto University 2‐39‐1 Kurokami Chuo‐ku Kumamoto 860–8555 Japan
1 shared publication
Latest Publications
- Open Access
- 3 May 2024
- Published by Springer Nature in Journal of Materials Science
- Vol. 59 (19) , 8134-8146
Disruption of polar order in lead zirconate titanate by composition-modulated artificial superlattice
Lead zirconate titanate (Pb (Zrx, Ti1−x)O3: PZT) is a well-known ferroelectric compound, in which long-range polar order is usually developed. In the present study, it was clarified by distortion-corrected atomic-scale scanning transmission electron microscopy imaging that long-range polar order is disrupted in PZT by utilizing composition-modulated superlattice. Shape of unit cell was unusual both in the Pb(Zr0.65Ti0.35)O3 (PZT65) and Pb(Zr0.30Ti0.70)O3 (PZT30) layers, which was due to mutual in-plane lattice constraint. By taking account of this, first-principles calculations clarified that multiple directions can be energetically favorable for lead-ion displacement, which explains a reason why long-range polar order was disrupted.
- 3 May 2024
- Published by Springer Nature in Journal of Materials Science
- Vol. 59 (19) , 8134-8146
Open AccessDisruption of polar order in lead zirconate titanate by composition-modulated artificial superlattice
Lead zirconate titanate (Pb (Zrx, Ti1−x)O3: PZT) is a well-known ferroelectric compound, in which long-range polar order is usually developed. In the present study, it was clarified by distortion-corrected atomic-scale scanning transmission electron microscopy imaging that long-range polar order is disrupted in PZT by utilizing composition-modulated superlattice. Shape of unit cell was unusual both in the Pb(Zr0.65Ti0.35)O3 (PZT65) and Pb(Zr0.30Ti0.70)O3 (PZT30) layers, which was due to mutual in-plane lattice constraint. By taking account of this, first-principles calculations clarified that multiple directions can be energetically favorable for lead-ion displacement, which explains a reason why long-range polar order was disrupted.