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

被引:0
|
作者
Ogawa, Hirozumi [1 ]
Kawada, Shinichiro [1 ]
Kimura, Masahiko [1 ]
Shiratsuyu, Kousuke [1 ]
Sakabe, Yukio [1 ]
机构
[1] Murata Mfg Co Ltd, Kyoto 6178555, Japan
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中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
The high-power piezoelectric characteristics in c-axis oriented ceramics of bismuth layer structured ferroelectrics (BLSF), SrBi(2)Nb(2)O(9) (SBN), Bi(4)Ti(3)O(12) (BIT) and CaBi(4)Ti(4)O(15) (CBT), were studied by constant voltage driving method. These textured ceramics were fabricated by templated grain growth (TGG) method, and their Lotgering factors were 95%, 97%, and 99%, respectively. The vibration velocities increased proportionally to an applied electric field up to 2.5 m/s in these textured BLSF ceramics, although, the vibration velocity 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 the vibration velocity of more than 1.5 m/s in the BIT textured ceramics.
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页码:638 / 639
页数:2
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