TITLE:
Synthesis and Analysis of PZT Using Impedance Method of Reactance Estimation
AUTHORS:
Witsarut Sriratana, Riichi Murayama, Lerdlekha Tanachaikhan
KEYWORDS:
BVD; Capacitance; Force; Frequency; Impedance; Inductance; PZT; Temperature
JOURNAL NAME:
Advances in Materials Physics and Chemistry,
Vol.3 No.1,
March
29,
2013
ABSTRACT: This study presents an analysis of equivalent circuit namely
Butterworth Van Dyke (BVD) [1,2] by using impedance method to stimulate Zirconate
Titanate (Piezoelectric ceramic) which
is initially synthesized from Lead Oxide (PbO), Zirconium Dioxide (ZrO2) and Titanium Dioxide
(TiO2) and vibrated in thickness mode. The reactance was estimated in
the frequency range lower than the resonance frequency and then compared to the
impedance obtained from measurement
using impedance analysis machine model HP4192A and HP4194 [3].
The results from HP4194 were analyzed for BVD parameters: Motional resistance (R1),
Inductor (L1), Capacitor (C1), and Capacitor
corresponds to the electrostatic
capacitance (Co).
Another accuracy analysis was compared by the calculation results using the method
of IEEE 176-1987 [4] to the impedance values measured
by HP4192A. In this study, there were two conditions for experiment and consideration
of parameter variation in BVD equivalent circuit: variation of temperature and mechanical
force. These parameters are evaluated to design the efficient circuit for PZT utilization
to obtain the optimal efficiency.