期刊
APPLIED PHYSICS LETTERS
卷 103, 期 24, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4846655
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资金
- Department of Energy [DE-FG02-07ER46480]
- Office of Naval Research [N00014-13-1-0049]
- Natural Science Foundation of China [51332009]
- Shanghai Rising-Star Program [11QA1407500]
- U.S. Department of Energy Office of Science [DE-AC02-06CH11357]
Diffuse scattering and relaxor behavior in Na0.5Bi0.5TiO3 (NBT) and NBT-5.6 at. % BaTiO3 (NBT-5.6%BT) were investigated. X-ray diffraction revealed two types of diffuse scattering in NBT: (i) broad and (ii) asymmetric L-shaped. After modification with 5.6%BT, the broad diffuse scattering patterns became narrow, and the asymmetric L-shaped ones were replaced by symmetric ones. The symmetric diffuse scattering in NBT-5.6%BT disappeared with increasing dc electric field (E) for E >= 9.5 kV/cm where the frequency dispersion in the dielectric constant disappeared. These results demonstrate that the relaxor characteristics are directly correlated with the diffuse scattering and the presence polar nano-regions. (C) 2013 AIP Publishing LLC.
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