Temperature Stability of Lead-free Piezoelectric Ceramics of Perovskite Bi0.5Na0.5TiO3 and K0.5Na0.5NbO3 Families
From the viewpoint of application, the temperature stability of the electrical properties of the lead-free piezoelectric ceramics is very important. Therefore, it is important to study the temperature stability of the electrical properties of perovskite Bi0.5Na0.5TiO3 (BNT)- and K0.5Na0.5NbO3 (KNN)-based ceramics. In this paper, two typical compositions of (Bi0.47Na0.47)Ba0.06TiO3 (BNBT6) and (K0.49Na0.49)Li0.02Nb0.95Sb0.05O3 (KNLNS2–5) were selected, and the temperature stability of the dielectric, piezoelectric, and ferroelectric properties of the two kinds of ceramics were compared from the point of view of the application of the ceramics. It was found that the piezoelectric properties of KNLNS2-5 ceramics are much more stable in the orthorhombic phase than in the tetragonal phase. This is an important clue to obtain excellent piezoelectric properties along with good temperature stability for KNN-based ceramics.
lead-free piezoelectric ceramics perovskite electrical properties temperature stability
D.Q. Xiao L. Wu J.G. Zhu
School of Material Science and Engineering,Sichuan University,Chengdu 610064,China School of Material Science and Engineering,Sichuan University,Chengdu 610064,China School of Materia
国际会议
西安
英文
145-148
2009-08-23（万方平台首次上网日期，不代表论文的发表时间）