Barium titanate-based semiconductor ceramic composition and barium titanate-based semiconductor ceramic device
AssigneeMurata Manufacturing Co., Ltd.
InventorsYoichi Kawase, Syunsuke Okuda, Yuichi Hirata, Yasuhiro Nabika
Life of this patent
Estimating the term…
Abstract
A barium titanate-based semiconductor ceramic composition which can be used for PTC thermistors for temperature sensors and which has characteristics, including a linear characteristic, advantageous for such PTC thermistors and a barium titanate-based semiconductor ceramic device. The barium titanate-based semiconductor ceramic composition is represented by the formula (Ba(1−v−w)MevSrw)TixO3+ySiO2, wherein Me is at least one of Er, Sm, Ce, and La, 0.001≦v≦0.005, 0.42≦w≦0.49, 0.99≦x≦1.03, and 0.002≦y≦0.030.
Claims16
A barium titanate-based semiconductor ceramic composition represented by the formula
- (Ba(1−v−w)MevSrw)TixO3+ySiO2
- wherein Me is at least one member selected from the group consisting of Er, Sm, Ce, and La, 0.001≦v≦0.005, 0.42≦w≦0.49, 0.99≦x≦1.03, and 0.002≦y≦0.030.
Dependencies are inferred from the claim text.