Domain Structure and High-load Resistance of Lead-free Niobate Piezoelectrics

2015 Fiscal Year Final Research Report

• Project/Area Number: 25289227
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Inorganic materials/Physical properties
• Research Institution: Nagoya Institute of Technology
• Principal Investigator: KAKIMOTO Ken-ichi 名古屋工業大学, 工学(系)研究科(研究院), 教授 (40335089)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: 環境材料 / セラミックス / 電子・電気材料 / 無鉛圧電体 / ドメイン構造

Outline of Final Research Achievements

Spectrophotometric techniques including Raman and infrared spectroscopies enabled to characterize the domain structure in lead-free niobate piezoelectric materials, and confirmed that a permittivity increased significantly in the vicinity of domain walls.
Based on the above fact, a manufacturing process was also improved successfully to synthesize the high-density ceramics having controlled microstructures, which could demonstrate excellent high-load resistances against elevated temperature and applied electrical field.

Free Research Field

電子セラミックス