The origin of ultrahigh piezoelectricity in relaxor-ferroelectric solid solution crystals
- Pennsylvania State Univ., University Park, PA (United States). Dept. of Materials Science and Engineering. Materials Research Inst.; Xi'an Jiaotong Univ., Xi'an (China). Electronic Materials Research Lab. Key Lab. of the Ministry of Education. International Center for Dielectric Research; DOE/SC/OSTI
- Pennsylvania State Univ., University Park, PA (United States). Dept. of Materials Science and Engineering. Materials Research Inst.; Univ. of Wollongong, NSW (Australia). Inst. for Superconducting and Electronic Materials. Australian Inst. of Innovative Materials
- Pennsylvania State Univ., University Park, PA (United States). Dept. of Materials Science and Engineering. Materials Research Inst.
- Xi'an Jiaotong Univ., Xi'an (China). Electronic Materials Research Lab. Key Lab. of the Ministry of Education. International Center for Dielectric Research
- Carnegie Inst. of Washington, Argonne, IL (United States). High Pressure Synergetic Consortium. Geophysical Lab.; Center for High Pressure Science and Technology Advanced Research, Shanghai (China)
- Univ. of Wollongong, NSW (Australia). Inst. for Superconducting and Electronic Materials. Australian Inst. of Innovative Materials
- Xi'an Jiaotong Univ., Xi'an (China). Electronic Materials Research Lab. Key Lab. of the Ministry of Education. International Center for Dielectric Research; Simon Fraser Univ., Burnaby, BC (Canada). Dept. of Chemistry. 4D LABS
- TRS Technologies Inc., State College, PA (United States)
The discovery of ultrahigh piezoelectricity in relaxor-ferroelectric solid solution single crystals is a breakthrough in ferroelectric materials. A key signature of relaxor-ferroelectric solid solutions is the existence of polar nanoregions, a nanoscale inhomogeneity, that coexist with normal ferroelectric domains. Despite two decades of extensive studies, the contribution of polar nanoregions to the underlying piezoelectric properties of relaxor ferroelectrics has yet to be established. Here we quantitatively characterize the contribution of polar nanoregions to the dielectric/piezoelectric responses of relaxor-ferroelectric crystals using a combination of cryogenic experiments and phase-field simulations. The contribution of polar nanoregions to the room-temperature dielectric and piezoelectric properties is in the range of 50–80%. A mesoscale mechanism is proposed to reveal the origin of the high piezoelectricity in relaxor ferroelectrics, where the polar nanoregions aligned in a ferroelectric matrix can facilitate polarization rotation. This mechanism emphasizes the critical role of local structure on the macroscopic properties of ferroelectric materials.
- Research Organization:
- Pennsylvania State Univ., University Park, PA (United States); Xi'an Jiaotong Univ., Xi'an (China)
- Sponsoring Organization:
- 111 Project (China); National Natural Science Foundation of China (NSFC); National Science Foundation (NSF) (United States); Natural Science Foundation of Shaanxi Province (China); Office of Naval Research (ONR) (United States); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
- Grant/Contract Number:
- AC02-06CH11357; FG02-07ER46417
- OSTI ID:
- 1423797
- Alternate ID(s):
- OSTI ID: 1338215
- Journal Information:
- Nature Communications, Journal Name: Nature Communications Vol. 7; ISSN 2041-1723
- Publisher:
- Nature Publishing GroupCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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