Ishii Keisuke

Affiliation and department：

Research field (1)： Electric/electronic material engineering

Research keywords (5)：圧電単結晶 , nonlinear piezoelectricity , orientation control , lead-free materials , piezoelectric ceramics

Research theme for competitive and other funds (6)：

2021 - 2025 Fabrication of Lead-Free Large Piezoelectric Single Crystals by Novel Rapid Solid-state Crystal Growth Method and Elucidation of the Growth Mechanism
2018 - 2021 Development of highly-reliable textured piezoelectric ceramics by utilizing shape-controlled single crystal particles
2015 - 2018 Development of lead-free piezoelectric ceramics for high power applications by microstructure control
2011 - 2013 Development of new orientation control technique for Perovskite-type piezoelectric ceramics utilizing rolling-extended method
1996 - 1996 アモルファスSiO2の構造不完全性が及ぼす真性絶縁破壊電界への影響

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Papers (78)：

Takaaki Morimoto, Seiya Shimono, Yuto Yoshiichi, Hiroaki Kishimura, Keisuke Ishii. Conditions of large unitary (K,Na)NbO₃ system single crystals for rapid solid-state crystal growth method. Japanese Journal of Applied Physics. 2023
Takaaki Morimoto, Seiya Shimono, Yuto Yoshiichi, Hiroaki Kishimura, Keisuke Ishii. Effects of Cu addition on rapid solid-state crystal growth of (K,Na)NbO₃ single crystals. Japanese Journal of Applied Physics. 2022. 61. SN. SN1015-SN1015
Takaaki Morimoto, Seiya Shimono, Keisuke Ishii. Growth of large unitary (K,Na)NbO₃ single crystals using a seed-free solid-state crystal growth method by adjusting the B-site excess ratios and additional Bi₂O₃. Japanese Journal of Applied Physics. 2020. 59. SP. SP1001-SP1001
T. Morimoto, Keisuke Ishii. Improvement effects of sinterability due to B-site excess composition in (K,Na)NbO3 system ceramics. Japanese Journal of Applied Physics. 2019. 58. 9. SLLD08-1-SLLD08-6
K. Ishii, S. Tashiro. Orientation factor and piezoelectric property in textured (K,Na)NbO3 system ceramics with minimal templates. Japanese Journal of Applied Physics. 2018. 57. 11. 11UD02-1-11UD02-7

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MISC (23)：

Morimoto Takaaki, Yamakawa Yasufumi, Ishii Keisuke. Schottky Contact between Au Electrode and Solution-processed IGZO or IZO. JSAP Annual Meetings Extended Abstracts. 2021. 2021.1. 1561-1561
Morimoto Takaaki, Ishii Keisuke. Existence of oxygen vacancies around KNN single crystals prepared by seed-free solid-state crystal growth method. JSAP Annual Meetings Extended Abstracts. 2020. 2020.2. 1199-1199
Morimoto Takaaki, Shimono Seiya, Ishii Keisuke. Characterization of KNN Crystals Fabricated Using Abnormal Grain Growth. JSAP Annual Meetings Extended Abstracts. 2020. 2020.1. 1682-1682
Morimoto Takaaki, Matsuyama Shigehiro, Ishii Keisuke. Improvement of sinterability in Bi-doped KNN ceramics by A-site deficiency. JSAP Annual Meetings Extended Abstracts. 2019. 2019.2. 1939-1939
石井, 啓介. 一段階溶融塩法による板状NaNbO3 結晶粒の作製-Fabrication of plate-like NaNbO3 particles by single-step molten salt method. 防衛大学校理工学研究報告. 2018. 第56巻. 第1号. 131-138

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Education (3)：

Work history (5)：

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