A method for identifying a ceramic material exhibiting an electric field-induced strain derived from a reversible phase transition, a manufacturing method, and a ceramic material obtained from the method.

摘要

The present invention relates to a method for identifying a solid solution ceramic material of a plurality of perovskite compounds exhibiting an electric field induced strain resulting from a reversible phase transition, and a method for producing such a ceramic material and a ceramic material obtained therefrom. Specifically, the present invention relates to a method for identifying a solid solution ceramic material of at least three perovskite compounds exhibiting an electric field induced strain resulting from a reversible phase transition, said method comprising: Determining a molar ratio to at least one non-tetragonal perovskite compound, wherein when forming a solid solution by combining, a tetragonal phase having an axial ratio c / a of greater than 1.005 and 1.04 or less is large. Determining a molar ratio to provide a ceramic material constituting the portion; and ii) a mole of at least one other non-tetragonal perovskite compound to the combination of the perovskite compound in the determined molar ratio from step i). A step of determining a ratio, wherein when combined to form a solid solution, 0.995 to 1.00 Pseudo cubic phase having a rhombohedral angle of axial ratio c / a and / or 90 ± 0.5 ° to provide a ceramic material which constitutes the majority, and determining a molar ratio, a.