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|1. (WO2018180772) PIEZOELECTRIC COMPOSITION AND PIEZOELECTRIC ELEMENT|
|Title:||PIEZOELECTRIC COMPOSITION AND PIEZOELECTRIC ELEMENT|
Provided is a piezoelectric composition which contains copper and a composite oxide having a perovskite structure and represented by general formula ABO3, wherein in the ABO3, the A site element is potassium, or potassium and sodium, and the B site element is niobium, or niobium and tantalum, copper is contained at a quantity of n mol% in terms of the copper element relative to 1 mole of the composite oxide, n satisfies the relationship 0.100 ≤ n ≤ 1.000, and the piezoelectric composition exhibits good mechanical strength. Also provided is a piezoelectric element comprising the piezoelectric composition.