Hysteresis in Piezoelectric and Ferroelectric Materials

The Science of Hysteresis 12/2006; 3. DOI: 10.1016/B978-012480874-4/50022-1
Source: OAI


This chapter approaches hysteresis from the materials science point of view. Piezoelectric and ferroelectric materials are widely used in many areas of technology and science. The sensors based on the piezoelectric effect transform mechanical signals into electrical signals and are used as accelerometers, and for measurements of pressure and vibration. The piezoelectric actuators transform electrical signals into mechanical signals and are used in displacement actuators and force generators. Ferroelectric materials are a special class of piezoelectrics, which exhibit a large piezoelectric response. With a few special exceptions, the ferroelectric materials with the highest piezoelectric properties are usually the ones with the strongest electromechanical hysteresis. The chapter demonstrates that the control, description, and understanding of electromechanical (piezoelectric) and ferroelectric hysteresis presents an important and difficult undertaking from both the practical and theoretical point of view. There are different approaches of reducing the hysteresis in piezoelectric devices. A material scientist may attempt the challenging task of minimizing the hysteresis by designing the material on a microstructural or even atomic level, while keeping the high piezoelectric response…

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Available from: Dragan Damjanovic, Apr 14, 2015
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