| 摘要 |
PROBLEM TO BE SOLVED: To propose an oxide ferroelectric substance having a higher dielectric constant and piezoelectric constant than before; and a production method thereof.SOLUTION: An oxide ferroelectric substance comprises a single crystal or polycrystal having a perovskite structure, where the direction of spontaneous polarization is controlled by introduced or reduced oxygen vacancies 6, so that a first phase H1 and a second phase H2 are oriented differently in the direction of spontaneous polarization. Herewith, the oxide ferroelectric substance 1 can achieve a higher dielectric constant and piezoelectric constant than before. |
