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首页> 外文期刊>IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control >High-power piezoelectric characteristics of textured bismuth layer structured ferroelectric ceramics
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High-power piezoelectric characteristics of textured bismuth layer structured ferroelectric ceramics

机译：铋化结构铁电陶瓷的大功率压电特性

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摘要

The high-power piezoelectric characteristics in (001) oriented ceramics of bismuth layer structured fer-roelectrics (BLSF), SrBi2Nb2O9 (SBN), (Bi,La)4Ti3O2 (BLT), and CaBi4Ti4Oi5 (CBT), were studied by a constant voltage driving method. These textured ceramics were fabricated by a templated grain growth (TGG) method, and their Lotgering factors were 95%, 97%, and 99%, respectively. The vibration velocities of the longitudinal mode (33-mode) increased proportionally to an applied electric field up to 2.5 m/s in these textured BLSF ceramics, although, the vibration velocity of the 33-mode was saturated at more than 1.0 m/s in the Pb(Mn,Nb)O3-PZT ceramics. The resonant frequencies were constant up to the vibration velocity of 2.5 m/s in the SBN and CBT textured ceramics; however, the resonant frequency decreased with increasing over the vibration velocity of 1.5 m/s in the BLT textured ceramics. The dissipation power density of the BLT was almost the same as that of the Pb(Mn,Nb)O3-PZT ceramics. However, the dissipation power densities of the SBN and CBT were lower than those of the BLT and Pb(Mn,Nb)O3-PZT ceramics. The textured SBN and CBT ceramics are good candidates for high-power piezoelectric applications.
机译：通过恒定电压研究了铋层结构铁电体（BLSF），SrBi2Nb2O9（SBN），（Bi，La）4Ti3O2（BLT）和CaBi4Ti4Oi5（CBT）的（001）取向陶瓷中的大功率压电特性。驾驶方法。这些纹理陶瓷是通过模板晶粒生长（TGG）方法制造的，其Lotgering因子分别为95％，97％和99％。在这些纹理化的BLSF陶瓷中，纵向模式（33模式）的振动速度与所施加的电场成比例地增加，直至2.5 m / s，尽管33模式的振动速度超过1.0 m / s饱和在Pb（Mn，Nb）O3-PZT陶瓷中在SBN和CBT质感陶瓷中，共振频率一直保持恒定，直到振动速度为2.5 m / s。然而，在BLT质感陶瓷中，共振频率随着振动速度1.5 m / s的增加而降低。 BLT的耗散功率密度几乎与Pb（Mn，Nb）O3-PZT陶瓷相同。但是，SBN和CBT的耗散功率密度低于BLT和Pb（Mn，Nb）O3-PZT陶瓷。 SBN和CBT质感陶瓷是大功率压电应用的理想选择。

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