Radial Mode Piezoelectric Response of La Modified Lead Zirconate Titanate in Morphotropic Phase Boundary Region

Temperature dependence of electromechanical properties of PLZT x/57/43 ceramics

“…The details of sample preparation and poling have been discussed by us earlier (Shukla et al 2004(Shukla et al , 2006. The diameter 2a, thickness t, live capacitance, C L and density of the synthesized samples are listed in table 1.…”

“…It has been observed that the compositions of PLZT ceramics with Zr/Ti 57/43 show enhanced piezoelectric response at room temperature and can be used in low power transducer devices (Shukla et al 2004). Keeping the device application in view, we have studied the temperature dependence of electromechanical properties of PLZT for different compositions.…”

“…Earlier studies revealed that the ceramic compositions having high piezoelectric strain can find their applications in emerging areas of micromechatronics, such as in camera installed cellular phones for auto focusing, cooling module for fuel cell power supply in laptops, optical fibre alignment, robotics, artificial fertilization system, micro pumps, drug delivery systems, ultrasonic distillations, injection valves and energy harvesting (Haertling 1999;Uchino 2008). The various compositions of PLZTs have shown excellent electromechanical properties that suited for such applications (Haertling 1999;Shukla et al 2004) and so, the functional properties of PLZTs have been extensively studied (Ochiai et al 1998;Bobnar et al 1999;Paik et al 1999;Kamba et al 2000;Volkov et al 2003;Tang et al 2007;Chen et al 2008). However, there has not been much systematic study of the temperature dependence of electromechanical properties of PLZT.…”

Dielectric response of PLZT ceramics x/57/43 across ferroelectric–paraelectric phase transition

“…• C for 2 h. The details of sample preparation and poling have been discussed by us earlier (Shukla et al 2004(Shukla et al , 2006. The poled disc shaped specimens of these compositions have been used for measurement.…”

“…On the basis of a phenomenological model with restricted drift motion of charged particles, Volkov et al (2003) described the universal dynamic response and broad band relaxation considering Maxwell-Wagner type interaction between conducting clusters of relaxors like PLZTs. The room temperature dielectric response of PLZT x/57/43 and Cr-doped PLZT 6/57/43 and temperature dependent piezoelectric response of PLZT x/57/43 have been investigated by us and it is found that the a.c. conductivity of these compositions follows the universal dielectric response (Jonscher 1977;Shukla et al 2004Shukla et al , 2006Shukla et al , 2010. Reviews by Buixaderas et al (2004) and Bokov and Ye (2006) describe various features of perovskite relaxors such as PLZTs and a variety of observations are attributed to the presence of polar nanoregions in the material.…”