Magnetostrictive element and method for manufacturing same
US-2020274056-A1 · Aug 27, 2020 · US
Magnetostriction element and magnetostriction-type vibration powered generator using same
US11012007B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11012007-B2 |
| Application number | US-201916460145-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 2, 2019 |
| Priority date | Aug 30, 2018 |
| Publication date | May 18, 2021 |
| Grant date | May 18, 2021 |
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- Title
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Abstract
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Provided herein is a magnetostriction element having a large power output and a high power density. The magnetostriction element is comprised of a magnetostrictive material that is a monocrystalline alloy represented by the following formula (1), Fe (100-α-β) Ga α X β , Formula (1) wherein α and β represent the Ga content (at %) and the X content (at %), respectively, X is at least one element selected from the group consisting of Sm, Eu, Gd, Tb, Dy, Cu, and C, and the formula satisfies 5≤α≤40, and 0≤β≤1.
First claim
Opening claim text (preview).
What is claimed is: 1. A magnetostriction element comprising a magnetostrictive material that is a monocrystalline alloy represented by the following formula (1), Fe (100-α-β) Ga α X β , Formula (1) wherein α and β represent Ga content (at %) and X content (at %), respectively, X is at least one element selected from a group consisting of Sm, Eu, Gd, Tb, Dy, Cu, and C, and the formula satisfies 5≤α≤40, and 0≤β≤1, the magnetostriction element having a longitudinal direction along which the magnetostriction element extends between opposing first and second ends, the magnetostriction element having a <100> crystal orientation of the monocrystalline alloy along a direction parallel to the longitudinal direction, and having a Ga concentration gradient that decreases in a direction from the second end to the first end. 2. The magnetostriction element according to claim 1 , wherein the magnetostriction element is plate-like in shape. 3. The magnetostriction element according to claim 1 , wherein the Ga concentration is 14 at % or more and 16 at % or less at the first end, and 17 at % or more and 19 at % or less at the second end. 4. The magnetostriction element according to claim 1 , wherein the Ga concentration decreases at an average rate of 0.15 at % or more and 0.2 at % or less per millimeter in the direction from the second end to the first end. 5. The magnetostriction element according to claim 1 , wherein X is at least one element selected from the group consisting of Sm, Cu, and C, and the formula satisfies 14≤α≤19, and 0.5≤β≤1.
Assignees
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Classifications
containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60 · CPC title
- H02N2/188Primary
adapted for resonant operation · CPC title
Electricity · mapped topic
Electricity · mapped topic
Magnetostrictive active materials · CPC title
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- What does patent US11012007B2 cover?
- Provided herein is a magnetostriction element having a large power output and a high power density. The magnetostriction element is comprised of a magnetostrictive material that is a monocrystalline alloy represented by the following formula (1), Fe (100-α-β) Ga α X β , Formula (1) wherein α and β represent the Ga content (at %) and the X content (at %), respectively, X is at least one ele…
- Who is the assignee on this patent?
- Panasonic Ip Man Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H02N2/188. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue May 18 2021 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 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).