|
|||||
|
|
Relaxor/Ferroelectric Composites: A Solution in the Quest for Practically Viable Lead‐Free Incipient Piezoceramics |
|
| Authors: | Claudia Groh Daniel J Franzbach Wook Jo Kyle G Webber Jens Kling Ljubomira A Schmitt Hans‐Joachim Kleebe Soon‐Jong Jeong Jae‐Shin Lee Jürgen Rödel |
| Affiliation: | 1. Department of Materials and Geoscience, Technische Universit?t Darmstadt, Germany;2. Korea Electrotechnology Research Institute, Changwon, Republic of Korea;3. School of Materials Science and Engineering, University of Ulsan, Ulsan, Republic of Korea |
| Abstract: | Recently developed lead‐free incipient piezoceramics are promising candidates for off‐resonance actuator applications with their exceptionally large electromechanical strains. Their commercialization currently faces two major challenges: high electric field required for activating the large strains and large strain hysteresis. It is demonstrated that design of a relaxor/ferroelectric composite provides a highly effective way to resolve both challenges. Experimental results in conjunction with numerical simulations provide key parameters for the development of viable incipient piezoceramics. |
| Keywords: | relaxor ceramic– ceramic composites actuators lead‐free piezoceramics |