High-power piezoelectric characteristics of textured bismuth layer structured ferroelectric ceramics.
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.
Ogawa
Hirozumi
H
Murata Manufactutring Company Ltd., Nagaokakyo-shi, Kyoto, Japan. ogahiro@murata.co.jp
Kawada
Shinichiro
S
Kimura
Masahiko
M
Shiratsuyu
Kousuke
K
Sakabe
Yukio
Y
D000162:Acoustics / Q000295:instrumentation*; D001729:Bismuth / Q000737:chemistry*; D002516:Ceramics / Q000737:chemistry*; D017097:Electric Impedance; D004563:Electrochemistry / Q000295:instrumentation / Q000379:methods; D004735:Energy Transfer; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008422:Materials Testing; D008567:Membranes, Artificial; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013499:Surface Properties; D014159:Transducers
D008567:Membranes, Artificial; D001729:Bismuth