期刊
JOURNAL OF APPLIED PHYSICS
卷 108, 期 1, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3445771
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资金
- Deutsche Forschungsgemeinschaft (DFG) [RO954/20-1]
The ferroelectric and piezoelectric properties of (1-x)BiFeO3-xPbTiO(3) (BF-PT) ceramics were investigated as a function of tetragonal distortion. The latter was adjusted by employing La-doping (0-30 at %) while keeping the material near the morphotropic phase boundary by varying x between 0.35 and 0.46. This allows changing the c/a ratio of tetragonal BF-PT in the range from 1.10-1.01 and consequently alters the level of compatibility stresses. It was found that the c/a ratio has a significant influence on domain switching as inferred from electric field induced polarization, strain hysteresis, and Rayleigh measurements. Specifically, a threshold c/a ratio of about 1.045 was identified below which the electric field induced domain mobility increases sharply. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3445771]
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