Piezoelectric composition and piezoelectric element
US-2020295252-A1 · Sep 17, 2020 · US
Piezoelectric element, piezoelectric actuator, and piezoelectric transformer
US12096695B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12096695-B2 |
| Application number | US-202117213573-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 26, 2021 |
| Priority date | Mar 27, 2020 |
| Publication date | Sep 17, 2024 |
| Grant date | Sep 17, 2024 |
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- Title
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Abstract
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Provided is a piezoelectric element according to the invention including a stacked body in which a piezoelectric layer and an internal electrode layer are stacked. In addition, the internal electrode layer contains at least one kind of element selected from palladium, nickel, platinum, gold, and silver, and copper, and the content of copper contained in the internal electrode layer is 1 to 50 at % in terms of a copper element.
First claim
Opening claim text (preview).
What is claimed is: 1. A piezoelectric element comprising: a stacked body including a piezoelectric layer and an internal electrode layer laminated to each other, wherein the internal electrode layer contains copper and at least one selected from palladium, nickel, platinum, gold, and silver, the content of copper contained in the internal electrode layer is 1 to 50 at % in terms of a copper element, and the piezoelectric layer contains an alkali metal niobate based oxide. 2. The piezoelectric element according to claim 1 , wherein the piezoelectric layer contains copper, and the content of copper contained in the piezoelectric layer is 1.0 to 4.5 mol % in terms of a copper element. 3. The piezoelectric element according to claim 1 , wherein a total content of copper contained in the stacked body is 1.0 to 5.0 mol % in terms of a copper element. 4. The piezoelectric element according to claim 2 , wherein a total content of copper contained in the stacked body is 1.0 to 5.0 mol % in terms of a copper element. 5. A piezoelectric actuator comprising: the piezoelectric element according to claim 1 . 6. A piezoelectric transformer comprising: the piezoelectric element according to claim 1 .
Assignees
Inventors
Classifications
Lead-zirconium titanate [PZT] based · CPC title
Alkali metal based oxides, e.g. lithium, sodium or potassium niobates · CPC title
Conductive materials · CPC title
- H10N30/871Primary
Single-layered electrodes of multilayer piezoelectric or electrostrictive devices, e.g. internal electrodes · CPC title
by integrally sintering piezoelectric or electrostrictive bodies and electrodes · CPC title
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- What does patent US12096695B2 cover?
- Provided is a piezoelectric element according to the invention including a stacked body in which a piezoelectric layer and an internal electrode layer are stacked. In addition, the internal electrode layer contains at least one kind of element selected from palladium, nickel, platinum, gold, and silver, and copper, and the content of copper contained in the internal electrode layer is 1 to 50 a…
- Who is the assignee on this patent?
- Tdk Corp
- What technology area does this patent fall under?
- Primary CPC classification H10N30/871. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Sep 17 2024 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).