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US 11,239,410 B2Granted
Piezoelectric composition and piezoelectric element
AssigneeTDK Corporation
InventorsHiroki Katoh, Yuiko Hirose, Masakazu Hirose
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Abstract
A piezoelectric composition including copper and a complex oxide having a perovskite structure represented by a general formula ABO3, in which an A site element in the ABO3 is potassium or potassium and sodium, a B site element in the ABO3 is niobium or niobium and tantalum, the copper is included in n mol % in terms of a copper element with respect to 1 mol of the complex oxide, and n satisfies 0.100≤n≤1.000.
Claims14
A piezoelectric composition comprising copper, manganese and a complex oxide having a perovskite structure represented by a general formula ABO3, wherein
- an A site element in the ABO3 is potassium or potassium and sodium,
- a B site element in the ABO3 is niobium or niobium and tantalum,
- the copper is included in n mol % in terms of a copper element with respect to 1 mol of the complex oxide, and
- n satisfies 0.100≤n≤1.000, and
- the manganese is included in z mol % in terms of a manganese element with respect to 1 mol of the complex oxide, and
- z satisfies 0.000<z≤1.500.
3 more elements
Dependencies are inferred from the claim text.