| 研究実績の概要 |
The purpose of research project is to enhance piezoelectric property by the structural engineering on the basis of mechanism of material softening with ion off-centering and morpotropic phase boundary (MPB).
This research project was conducted by Prof. Satoshi Wada and Dr. Sangwook Kim in cooperation with each other in their specialized fields. This year, the research was conducted to enhance of the kp in PZT ceramics through structural engineering, and confirming its crystal structure to achieve the research objectives. The existence of MPB in the Ba and La co-doped PZT ceramics was confirmed by synchrotron radiation X-ray diffraction, which was measured in the SPring-8. Besides, it was confirmed that structure engineering (MPB + ion’s off-centering) is effective in improving the electrical properties by showing a significantly higher kp value of structure engineered ceramics.
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