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US 12,010,921 B2Granted
Piezoelectric element with lithium manganate-containing ceramic layers and silver-containing internal electrodes
AssigneeTaiyo Yuden Co., Ltd.
InventorsRyo Ito, Takayuki Goto
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Abstract
A multilayer piezoelectric element using an alkaline niobate-based piezoelectric ceramic, which can inhibit its reliability from dropping while lowering production cost, is characterized by forming internal electrodes (10) with a metal whose silver content is 80 percent by mass or higher, and also constituting piezoelectric ceramic layers (40) with a piezoelectric ceramic whose primary component is an alkaline niobate having a perovskite structure and which also contains a lithium manganate.
Claims8
A multilayer piezoelectric element comprising:
- piezoelectric ceramic layers constituted by a piezoelectric ceramic whose primary component is an alkaline niobate having a perovskite structure and which further contains lithium manganate;
- and
- internal electrodes formed by a metal whose silver content is 80 percent by mass or higher, and provided between the piezoelectric ceramic layers.
Dependencies are inferred from the claim text.