Structural origin of room temperature poling enhanced piezoelectricity in modified Pb(Mg1/3Nb2/3)O3‐30%PbTiO3 crystals
Abstract
The piezoelectric properties of [110]‐oriented Mn‐doped Pb(Mg1/3Nb2/3)O3‐30%PbTiO3 single crystals was found to be enhanced by poling at room temperature, relative to traditional poling on field‐cooling (FC). High‐resolution x‐ray diffraction data revealed a phase transition sequence of cubic→tetragonal→ orthorhombic (O)→monoclinic B‐type (MB) on field‐cooling with a phase coexistence of single domain O and MB at 300 K in the FC state; whereas poling at room temperature revealed a MB single phase. Accordingly, the structural origin of the piezoelectricity enhancement on poling at room temperature is attributed to a pure MB phase. It is probable, in the FC state, that field‐cooling results in defect dipole migration, which then acts to stabilize regions of the O phase on cooling into the MB one.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jun 22, 2017
- Source ID
- 10.1111/jace.15006
Entities
People
- D. Viehland
- Ding Wang
- Guoliang Yuan
- Haosu Luo
- Jiefang Li
- Yaojin Wang
Organizations
- Nanjing University of Science and Technology
- National Natural Science Foundation of China
- Natural Science Foundation of Jiangsu Province
- Office of Naval Research
- Shanghai Institute of Ceramics
- Virginia Tech