PIEZOELECTRIC CERAMIC COMPOSITION, ITS PRODUCTION METHOD, AND PIEZOELECTRIC ELEMENT

摘要

PROBLEM TO BE SOLVED: To prevent swelling and infiltration of a reaction vessel due to the flux within the reaction vessel even when the single crystal is grown at high temperature in growing the single crystal by using the flux containing sodium metal etc.

SOLUTION: The composition contains at least one component expressed by the component fired under reduction firing conditions and expressed as CuOx(x≥0) as a sub-component. The content of the sub-component is ≤3.0 mass% in terms of CuO (not inclusive of 0). The reduction firing conditions are, for example, firing temperature 800 to 1,200°C and oxygen partial pressure 1×10-10to 1×10-6atm.

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