Effect of Stress on Energy Conversion and Storage Characteristics of (1-x-y)PIN-xPMN-yPT Single Crystals

Abstract

Ferroelectric materials are used in many applications including, high-voltage generator, sonar, medical, electro-acoustic coupling, filters circuits and many more. In this work, the compositional dependence and stress dependence of the electromechanical properties of [011]C relaxor ferroelectric (1-x-y)Pb(In1/2Nb1/2)O3-xPb(Mg1/3Nb2/3)O3-yPbTiO3 (PIN-PMN-PT) single crystals has been determined. The specimens were subjected to mechanical loading and mechanical energy converted was found out by using Olsen-like cycle. It can be inferred that as the applied stress increases, converted energy density also increases. The maximum energy converted was found out to be 98.8 kJ/m3 for composition 0.32PIN-0.38PMN-0.30PT between 0 to 36 MPa. Also, the energy storage density for the specimens was found out. The maximum energy stored was found to be 98.8kJ/m3 for 0.24PIN-0.46PMN-0.30PT.