US 12,232,421 B2
Piezoelectric composition and electronic component
Masakazu Hirose, Tokyo (JP); and Yuiko Hirose, Tokyo (JP)
Assigned to TDK CORPORATION, Tokyo (JP)
Filed by TDK CORPORATION, Tokyo (JP)
Filed on Mar. 16, 2021, as Appl. No. 17/203,459.
Claims priority of application No. 2020-045651 (JP), filed on Mar. 16, 2020.
Prior Publication US 2021/0288239 A1, Sep. 16, 2021
Int. Cl. H01L 41/083 (2006.01); H01L 41/047 (2006.01); H01L 41/187 (2006.01); H01L 41/297 (2013.01); H01L 41/43 (2013.01); H10N 30/067 (2023.01); H10N 30/097 (2023.01); H10N 30/50 (2023.01); H10N 30/853 (2023.01); H10N 30/87 (2023.01)
CPC H10N 30/50 (2023.02) [H10N 30/067 (2023.02); H10N 30/097 (2023.02); H10N 30/8542 (2023.02); H10N 30/87 (2023.02)] 14 Claims
OG exemplary drawing
 
1. A piezoelectric composition comprising:
a carbon, and a main component composed of an alkali metal niobate based compound,
wherein an amount of the carbon contained is 360 to 500 ppm by weight, wherein
the alkali metal niobate based compound is expressed by a compositional formula of (KxNay)NbO3, and
y satisfies 0 and x satisfies a relationship of 0.980≤x≤1.000.