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Thermoelectric conversion element and method for making the same
US10326069B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10326069-B2 |
| Application number | US-201414762674-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 17, 2014 |
| Priority date | Jan 24, 2013 |
| Publication date | Jun 18, 2019 |
| Grant date | Jun 18, 2019 |
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Abstract
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In order to further improve the spin-current/electric-current conversion efficiency in a spin-current thermoelectric conversion element, a thermoelectric conversion element includes a magnetic material layer having in-plane magnetization; and an electromotive material layer magnetically coupled with the magnetic material layer. The electromotive material layer includes a first conductor with a spin orbit coupling arising, and a second conductor having lower electric conductivity than electric conductivity of the first conductor.
First claim
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The invention claimed is: 1. A thermoelectric conversion element, comprising: a magnetic material layer having in-plane magnetization; and an electromotive material layer magnetically coupled with the magnetic material layer and stacked on the magnetic material layer, wherein the magnetic material layer is a magnetic insulator, the electromotive material layer includes a first conductor with a spin orbit coupling arising, and a second conductor having lower electric conductivity than the electric conductivity of the first conductor, the magnetic material layer is magnetically coupled with one of the first conductor and the second conductor, the electromotive material layer has one multi-layered structure in which the first conductor and the second conductor are stacked alternately in a stacking direction of the magnetic material layer and the electromotive material layer, the one multi-layered structure includes more than one layer of at least one of the first conductor and the second conductor, and the stacking direction is perpendicular to the electromotive material layer. 2. The thermoelectric conversion element according to claim 1 , wherein the second conductor is formed so as to extend almost parallel to an interface between the magnetic material layer and the electromotive material layer. 3. A method for making a thermoelectric conversion element, comprising: forming a magnetic material layer having in-plane magnetization, the magnetic material layer being a magnetic insulator; and stacking an electromotive material layer on the magnetic material layer at one site, the electromotive material layer magnetically coupled with the magnetic material layer, wherein the forming the electromotive material layer includes stacking, in a stacking direction of the magnetic material layer and the electromotive material layer, a first conductor with a spin orbit coupling arising and a second conductor having lower electric conductivity than the electric conductivity of the first conductor, magnetically coupling one of the first conductor and the second conductor with the magnetic material layer, and forming more than one layer of at least one of the first conductor and the second conductor, and the stacking direction is perpendicular to the electromotive material layer. 4. The thermoelectric conversion element according to claim 1 , wherein the magnetic insulator is magnetically coupled with the one multi-layered structure on a single face.
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Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
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- What does patent US10326069B2 cover?
- In order to further improve the spin-current/electric-current conversion efficiency in a spin-current thermoelectric conversion element, a thermoelectric conversion element includes a magnetic material layer having in-plane magnetization; and an electromotive material layer magnetically coupled with the magnetic material layer. The electromotive material layer includes a first conductor with a …
- Who is the assignee on this patent?
- Nec Corp
- What technology area does this patent fall under?
- Primary CPC classification H01L35/28. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jun 18 2019 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).