Abstract
The high performance of piezoelectricity was discovered in the ferroelectric single crystals by an electric field applied along non-polar direction. This domain configuration introduced by this method is called "Engineered Domain Structure". BaTiO3 single crystals were introduced Engineered Domain Structure by applying the electric field along [111] direction. BaTiO3 samples with different domain configurations were prepared, and their piezoelectricity was measured by an impedance analyzer.