High Power Piezoelectric Characteristics for Perovskite-Type Lead-Free Ferroelectric Ceramics

2010 ◽  
Vol 115 (1) ◽  
pp. 63-70 ◽  
Author(s):  
Hajime Nagata ◽  
Yuji Hiruma ◽  
Tadashi Takenaka
Keyword(s):  
High Power ◽  
Lead Free ◽  
Ferroelectric Ceramics ◽  
Perovskite Type ◽  
Piezoelectric Characteristics

Piezoelectric Properties of Perovskite-Type Lead-Free Piezoelectric Ceramics under Large Amplitude Continuous Driving

2011 ◽  
Vol 485 ◽  
pp. 85-88
Author(s):  
Shigeki Sato ◽  
Yoji Noumura ◽  
Yuji Hiruma ◽  
Hajime Nagata ◽  
Tadashi Takenaka
Keyword(s):  
High Power ◽  
Large Amplitude ◽  
Piezoelectric Properties ◽  
Piezoelectric Ceramics ◽  
Lead Free ◽  
Vibration Velocity ◽  
Perovskite Type ◽  
Piezoelectric Characteristics

High-power piezoelectric characteristics of (Bi1/2Na1/2)TiO3(BNT)- and KNbO3(KN)-based ceramics at continuous driving were investigated. The selected compositions of BNT- and KN-based ceramics were 0.88(Bi1/2Na1/2)TiO3-0.04(Bi1/2Li1/2)TiO3-0.08(Bi1/2K1/2)TiO3doped with 0.6 wt% MnCO3[BNLKT4-8Mn0.6] and KNbO3-MnCO30.8 wt% [KN-Mn0.8] ceramics. It was found that the vibration velocityv0-Pof BNLKT4-8Mn0.6 and KN-Mn0.8 ceramics linearly increased up to approximately 0.8 and 0.6 m/s, respectively. The temperature increases of BNLKT4-8Mn0.6 and KN-Mn0.8 ceramics were approximately 5°C under continuous driving at the vibration velocity of 0.6 m/s.

High-Power Piezoelectric Characteristics of Sr2Bi4Ti5O18-Ca2Bi4Ti5O18-Based Ferroelectric Ceramics

2011 ◽  
Vol 485 ◽  
pp. 93-96 ◽  
Author(s):  
Yoji Noumura ◽  
Shigeki Sato ◽  
Yuji Hiruma ◽  
Hajime Nagata ◽  
Tadashi Takenaka
Keyword(s):  
High Power ◽  
Mechanical Quality Factor ◽  
Power Measurement ◽  
Lead Free ◽  
Ferroelectric Ceramics ◽  
Vibration Velocity ◽  
Lead Free Ceramics ◽  
Mechanical Quality ◽  
Mn Doped ◽  
Piezoelectric Characteristics

The high-power piezoelectric characteristics of lead-free piezoelectric ceramics, based on a bismuth layer-structured ferroelectric, MnCO3-doped (Sr0.7Ca0.3)2Bi4Ti5O18(abbreviated as SCBT0.3 + Mnxwt%), were studied. SCBT0.3 + Mnxwt% lead-free ceramics showed an extremely high mechanical quality factor (Qm) of more than 3000 in the (33) vibration mode under small-amplitude vibration. The high-power piezoelectric characteristics of SCBT0.3 + Mnxwt% were measured using the high-power measurement method based on frequency sweep driving under a constant voltage condition. It was found that the vibration velocityv0-pof SCBT0.3 + Mn 0.2 wt% linearly increased up to approximately 3.0 m/s. Therefore, the Mn-doped SCBT0.3-based ceramics are a promising candidate for lead-free high-power applications.

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

2007 ◽  
Vol 54 (12) ◽  
pp. 2500-2504 ◽  
Author(s):  
Hirozumi Ogawa ◽  
Shinichiro Kawada ◽  
Masahiko Kimura ◽  
Kousuke Shiratsuyu ◽  
Yukio Sakabe
Keyword(s):  
High Power ◽  
Ferroelectric Ceramics ◽  
Piezoelectric Characteristics

High-Power Piezoelectric Characteristics of Nontextured Bismuth Layer-Structured Ferroelectric Ceramics

2011 ◽  
Vol 50 (9) ◽  
pp. 09ND05 ◽  
Author(s):  
Hajime Nagata ◽  
Masahiro Seki ◽  
Yoji Noumura ◽  
Yuji Hiruma ◽  
Tadashi Takenaka
Keyword(s):  
High Power ◽  
Ferroelectric Ceramics ◽  
Piezoelectric Characteristics

High-Power Piezoelectric Characteristics of Nontextured Bismuth Layer-Structured Ferroelectric Ceramics

2011 ◽  
Vol 50 (9S2) ◽  
pp. 09ND05 ◽  
Author(s):  
Hajime Nagata ◽  
Masahiro Seki ◽  
Yoji Noumura ◽  
Yuji Hiruma ◽  
Tadashi Takenaka
Keyword(s):  
High Power ◽  
Ferroelectric Ceramics ◽  
Piezoelectric Characteristics

High-Power Piezoelectric Characteristics of Bi4Ti3O12–SrBi4Ti4O15-Based Ferroelectric Ceramics

2010 ◽  
Vol 49 (9) ◽  
pp. 09MD02 ◽  
Author(s):  
Yoji Noumura ◽  
Yuji Hiruma ◽  
Hajime Nagata ◽  
Tadashi Takenaka
Keyword(s):  
High Power ◽  
Ferroelectric Ceramics ◽  
Piezoelectric Characteristics
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