High‐Performance Electrostrictive Relaxors with Dispersive Endotaxial Nanoprecipitations
- Beijing Advanced Innovation Center for Materials Genome Engineering Department of Physical Chemistry University of Science and Technology Beijing Beijing 100083 P. R. China
- Beijing Advanced Innovation Center for Materials Genome Engineering Department of Physical Chemistry University of Science and Technology Beijing Beijing 100083 P. R. China, School of Mathematics and Physics University of Science and Technology Beijing Beijing 100083 P. R. China
- Beijing National Laboratory for Condensed Matter Physics Institute of Physics Chinese Academy of Sciences Beijing 100190 P. R. China
- School of Mathematics and Physics University of Science and Technology Beijing Beijing 100083 P. R. China
Ultrahigh‐precision manufacturing and detection have highlighted the importance of investigating electrostrictive materials with a weak stimulated extrinsic electric field and a simultaneous large hysteresis‐free strain. In this study, a new type of electrostrictive relaxor ferroelectric is designed by constructing a complex inhomogeneous local structure to realize excellent electrostrictive properties. A remarkably large electrostrictive coefficient, M 33 (8 × 10 −16 m 2 V −2 ) is achieved. Through a combined atomic‐scale scanning transmission electron microscopy and advanced in situ high‐energy synchrotron X‐ray diffraction analysis, it is observed that such superior electrostrictive properties can be ascribed to a special domain structure that consists of endotaxial nanoprecipitations embedded in a polar matrix at the phase boundary of the rhombohedral/tetragonal/cubic phases. The matrix contributes to the high strain response under the weak extrinsic electric field because of the highly flexible polarization and randomly dispersed endotaxial nanoprecipitations with a nonpolar central region, which provide a strong restoring force that reduces the strain hysteresis. The approach developed in this study is widely applicable to numerous relaxor ferroelectrics, as well as other dielectrics, for further enhancing their electrical properties, such as electrostriction and energy‐storage capacity.
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- AC02-06CH11357
- OSTI ID:
- 1880167
- Alternate ID(s):
- OSTI ID: 1901020
- Journal Information:
- Advanced Materials, Journal Name: Advanced Materials Journal Issue: 36 Vol. 34; ISSN 0935-9648
- Publisher:
- Wiley Blackwell (John Wiley & Sons)Copyright Statement
- Country of Publication:
- Germany
- Language:
- English
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