Relationship among the Crystal Structure, Texture, and Macroscopic Properties of Tetragonal (Pb,La)(Zr,Ti)O3 Ferroelectrics Investigated by In Situ High-Energy Synchrotron Diffraction
- Tianjin Normal Univ. (China)
- Univ. of Science and Technology Beijing (China)
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Univ. of Science and Technology Beijing (China). Inst. of Solid State Chemistry, Beijing Advanced Innovation Center for Materials Genome Engineering
- Univ. of Science and Technology Beijing (China); Univ. of Science and Technology Beijing (China). Inst. of Solid State Chemistry, Beijing Advanced Innovation Center for Materials Genome Engineering
In situ diffraction investigations have played an important role in experimentally revealing the mechanism of piezoelectric and ferroelectric properties. In this study, a pure tetragonal ferroelectric ceramic of La-doped PbZr0.5Ti0.5O3 (LaPZT50) was investigated to eliminate the complex influence of phase coexistence. The electric field evolutions of the crystal structure, domain switching, and lattice deformation of the tetragonal phase have been revealed by in situ high-energy synchrotron X-ray diffraction. Furthermore, we found that the crystal structure of LaPZT50 is quite stable, showing a negligible change in the Pb–O bond length, unit cell volume, and spontaneous polarization upon application of an in situ external electric field. Importantly, the maximum macroscopic polarization of tetragonal LaPZT50 is defined by the 111-oriented grains. As determined by the intensity difference, the switching of non-180° domains plays a more significant role in contributing to the macroscopic strain than lattice deformation. These results further imply that the phase coexistence around the morphotropic phase boundary facilitates domain wall motion in the tetragonal phase and improves the ferroelectric and piezoelectric properties.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- National Natural Science Foundation of China (NSFC); Fundamental Research Funds for the Central Universities; China Scholarship Council; USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division
- Grant/Contract Number:
- AC02-06CH11357; FRF-TP-18-001C2; 21701126; 21801013; 21825102; 21731001; 21590793
- OSTI ID:
- 1780725
- Journal Information:
- Inorganic Chemistry, Vol. 59, Issue 18; ISSN 0020-1669
- Publisher:
- American Chemical Society (ACS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
Electric-field-induced structure and domain texture evolution in PbZrO3-based antiferroelectric by in-situ high-energy synchrotron X-ray diffraction
Structure and good piezoelectric performance in the complex system of Pb[(Zn,Ni)Nb]O3–Pb[(In,Yb)Nb]O3–Pb(Zr,Hf,Ti)O3