High-Power Piezoelectric Vibration Characteristics of Textured SrBi2Nb2O9 Ceramics
High-Power Piezoelectric Vibration Characteristics of Textured SrBi2Nb2O9 Ceramics
复制标题
织构SrBi2Nb2O9陶瓷的高功率压电振动特性
DOI：
10.1143/jjap.45.7455
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发表时间：
2006
影响因子：
1.5
通讯作者：
H. Niimi
中科院分区：
文献类型：
--
作者：
S. Kawada;H. Ogawa;M. Kimura;K. Shiratsuyu;H. Niimi
采用恒流驱动方法研究了铋层状结构铁电体织构SrBi2Nb2O9(SBN)陶瓷在纵模(33模)下的高功率压电振动特性，并与普通随机取向SBN和广泛使用的Pb(Ti,Zr)O3(PZT)陶瓷进行了比较。对于织构 SBN 陶瓷，谐振特性在振动速度高达 2.6 m/s 时保持稳定。谐振频率下的振动速度与施加的电场成比例地增加，并且在高振动速度驱动中谐振频率几乎恒定。另一方面，在随机取向的SBN和PZT陶瓷的情况下，振动速度的增加与所施加的高电场不成正比，并且谐振频率随着振动速度的增加而降低。即使振动速度为 2.6 m/s，织构化 SBN 陶瓷的共振锐度 Q 也约为 2000。因此，织构化 SBN 陶瓷是高功率压电应用的良好候选者。
The high-power piezoelectric vibration characteristics of textured SrBi2Nb2O9 (SBN) ceramics, that is bismuth-layer-structured ferroelectrics, were studied in the longitudinal mode (33-mode) by constant current driving method and compared with those of ordinary randomly oriented SBN and widely used Pb(Ti,Zr)O3 (PZT) ceramics. In the case of textured SBN ceramics, resonant properties are stable up to a vibration velocity of 2.6 m/s. Vibration velocity at resonant frequency increases proportionally with the applied electric field, and resonant frequency is almost constant in high-vibration-velocity driving. On the other hand, in the case of randomly oriented SBN and PZT ceramics, the increase in vibration velocity is not proportional to the applied high electric field, and resonant frequency decreases with increasing vibration velocity. The resonant sharpness Q of textured SBN ceramics is about 2000, even at a vibration velocity of 2.6 m/s. Therefore, textured SBN ceramics are good candidates for high-power piezoelectric applications.