High-power piezoelectric characteristics of textured bismuth layer structured ferroelectric ceramics

IEEE Trans Ultrason Ferroelectr Freq Control. 2007 Dec;54(12):2500-4. doi: 10.1109/TUFFC.2007.567.

Abstract

Abstract-The high-power piezoelectric characteristics in h001i oriented ceramics of bismuth layer structured ferroelectrics (BLSF), SrBi(2)Nb(2)O(9) (SBN), (Bi,La)(4)Ti(3)O(12) (BLT), and CaBi(4)Ti(4)O(15) (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)O(3)-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)O(3)-PZT ceramics. However, the dissipation power densities of the SBN and CBT were lower than those of the BLT and Pb(Mn,Nb)O(3)-PZT ceramics. The textured SBN and CBT ceramics are good candidates for high-power piezoelectric applications.

MeSH terms

  • Acoustics / instrumentation*
  • Bismuth / chemistry*
  • Ceramics / chemistry*
  • Electric Impedance
  • Electrochemistry / instrumentation
  • Electrochemistry / methods
  • Energy Transfer
  • Equipment Design
  • Equipment Failure Analysis
  • Materials Testing
  • Membranes, Artificial*
  • Reproducibility of Results
  • Sensitivity and Specificity
  • Surface Properties
  • Transducers*

Substances

  • Membranes, Artificial
  • Bismuth