Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/23120
Title: Piezoelectric and dielectric characteristics of lead-free BNKLBT ceramic thick film and multilayered piezoelectric actuators
Authors: Choy, SH
Jiang, XP
Kwok, KW 
Chan, HLW 
Keywords: Electrical properties
Mechanical properties
Perovskites
Actuators
Issue Date: 2010
Publisher: Pergamon Press
Source: Ceramics international, 2010, v. 36, no. 8, p. 2345-2350 How to cite?
Journal: Ceramics international 
Abstract: Lead-free piezoelectric 0.885(Bi0.5Na0.5)TiO 3-0.05(Bi0.5K0.5)TiO3-0.015(Bi 0.5Li0.5)TiO3 0.05BaTiO3 ceramics (abbreviated as BNKLBT-1.5) were prepared by a conventional mixed oxide method. The composition has a piezoelectric d33 constant of 154 × 10-12 C/N, an electromechanical coupling coefficient kt of 0.519, a relatively low dissipation factor (tan δ = 1.6%) at 1 kHz. BNKLBT-1.5 multilayered actuators have been fabricated using a roll-casting technique. Each single layer has dimensions of 9.0 mm × 9.0 mm × 0.2 mm. Four multilayer actuators with 5, 10, 15 and 20 layers have been fabricated. Their capacitance and displacement under an a.c. field were measured. The capacitance measured at 1 kHz is 9.64 nF, 14.69 nF, 25.36 nF, 32.59 nF and the displacement measured at 5 kHz is 867 pm/V, 1331 pm/V, 2060 pm/V, 2442 pm/V, respectively.
URI: http://hdl.handle.net/10397/23120
ISSN: 0272-8842
EISSN: 1873-3956
DOI: 10.1016/j.ceramint.2010.07.030
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