Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/23469
Title: Electromechanical and ferroelectric properties of (Bi1/2Na 1/2)TiO3-(Bi1/2K1/2)TiO 3- (Bi1/2Li1/2)TiO3-BaTiO 3 lead-free piezoelectric ceramics for accelerometer application
Authors: Choy, SH
Wang, XX
Chan, HLW 
Choy, CL 
Issue Date: 2007
Publisher: Springer
Source: Applied physics. A, Materials science & processing, 2007, v. 89, no. 3, p. 775-781 How to cite?
Journal: Applied physics. A, Materials science & processing 
Abstract: Lead-free (0.90-x)(Bi1/2Na1/2)TiO3-0. 05(Bi1/2K1/2)TiO3-x(Bi1/2Li 1/2)TiO3-0.05BaTiO3 piezoelectric ceramics (abbreviated as BNKLBT-100x, with x ranged from 0 to 2.5 mol∈%) were prepared by a conventional mixed oxide method. Effects of the amount of (Bi 1/2Li1/2)TiO3 (BLT) on the electrical properties and crystal structure of the BNKLBT ceramics were examined. BNKLBT-1.5 ceramics have good properties with piezoelectric constant d 33=163 pC/N, electromechanical coupling factor kp=0.33, kt=0.53, relative permittivity εr=785 and dissipation factor cosδ=2.2% at 1 kHz. The sample has larger remnant polarization than BNKLBT-0 ceramics and the same coercive field as BNKLBT-0 ceramics. X-ray diffraction analysis shows that the incorporated BLT diffuses into the BNT-BKT-BT lattice to form a solid solution during sintering, but changes the crystal structure from rhombohedral to tetragonal symmetry at higher BLT amounts. Depolarization temperature (Td) of the BNKLBT-100x ceramics increases from 102 °C to ∼ 136 °C for BNKLBT-0 to BNKLBT-2.5. BNKLBT-1.5 is used as the transduction element in compressive type accelerometer and its sensitivity is calibrated by the back-to back method. Within the ±2.5% tolerance, the lead-free accelerometer has a mean value of 2.97 pC/ms-2 within 50 Hz-12.45 kHz and the lead-based accelerometer has a mean value of 4.34 pC/ms-2 within 50 Hz to 8.24 kHz.
URI: http://hdl.handle.net/10397/23469
ISSN: 0947-8396
EISSN: 1432-0630
DOI: 10.1007/s00339-007-4170-y
Appears in Collections:Journal/Magazine Article

Access
View full-text via PolyU eLinks SFX Query
Show full item record

SCOPUSTM   
Citations

33
Last Week
0
Last month
0
Citations as of Dec 9, 2017

WEB OF SCIENCETM
Citations

28
Last Week
0
Last month
0
Citations as of Dec 9, 2017

Page view(s)

52
Last Week
1
Last month
Checked on Dec 10, 2017

Google ScholarTM

Check

Altmetric



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.