Designing high-performance and high Tc Pb-free piezoelectrics

2016 Fiscal Year Final Research Report

• Project/Area Number: 26289245
• 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: National Institute for Materials Science
• Principal Investigator: Ren Xiaobing 国立研究開発法人物質・材料研究機構, 機能性材料研究拠点, 上席研究員 (50292529)
• Research Collaborator: YAN Kang Nanjing University of Aeronautics and Astronautics, State Key Laboratory of Mechanics and Control of Mechanical Structures, College of Aerospace Engineering, 助教授 ; GAO Jinghui Xi'an Jiaotong University, State Key Laboratory of Electrical Insulation and Power Equipment and Multi-disciplinary Materials Research Center, Frontier Institute of Science and Technology, 講師
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 強誘電体 / 圧電材料 / 誘電材料

Outline of Final Research Achievements

This project is based on our recent finding of a highly piezoelectric Pb-free material BZT-BCT (Phys. Rev. Lett. 2009) and aimed at clarify its physical origin and thus desiging highly piezoelectric and yet high Tc Pb-free piezoelectrics. We have essentially achieved the goal and the main achievements are as follows.
1. We have clarified the origin of highly piezoelectric BZT-BCT material using TEM and CBED techniques.
2. The understandingg of the origin of high piezoelectricity helps to design a new Pb-free piezoelectric with both high piezoelectricity and high Tc. (Patent in processing)

Free Research Field

強誘電体、圧電材料