Back to results
US 9,437,807 B2Granted
Piezoelectric composition and piezoelectric element
AssigneeTDK Corporation
InventorsYuko Saya, Taku Masai, Masahito Furukawa, Masamitsu Haemori
Life of this patent
Estimating the term…
Abstract
The present invention aims to provide a piezoelectric composition and a piezoelectric element containing the piezoelectric composition. In the piezoelectric composition, the main component contains a substance represented by the following formula with a perovskite structure, (Bi(0.5x+y+z)Na0.5x)m(Ti(x+0.5y)Mg0.5yAlkzCo(1−k)z)O3 0.15≦x≦0.7, 0.28≦y≦0.75, 0.02≦z≦0.30, 0.17≦k≦0.83, 0.75≦m≦1.0, and x+y+z=1.
Claims2
A piezoelectric composition comprising a main component which contains a substance represented by the following formula with a perovskite structure,
- (Bi(0.5x+y+z)Na0.5x)m(Tix+0.5yMg0.5yAlkzCo(1−k)z)O3
- wherein, 0.15≦x≦0.7, 0.28≦y≦0.75, 0.02≦z≦0.30, 0.17≦k≦0.83, 0.75≦m≦1.0, and x+y+z=1.
Dependencies are inferred from the claim text.