JP7006696B2 - 熱電変換素子 - Google Patents
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- MTRJKZUDDJZTLA-UHFFFAOYSA-N iron yttrium Chemical compound [Fe].[Y] MTRJKZUDDJZTLA-UHFFFAOYSA-N 0.000 description 3
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- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 1
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N15/00—Thermoelectric devices without a junction of dissimilar materials; Thermomagnetic devices, e.g. using the Nernst-Ettingshausen effect
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N15/00—Thermoelectric devices without a junction of dissimilar materials; Thermomagnetic devices, e.g. using the Nernst-Ettingshausen effect
- H10N15/20—Thermomagnetic devices using thermal change of the magnetic permeability, e.g. working above and below the Curie point
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F10/00—Thin magnetic films, e.g. of one-domain structure
- H01F10/08—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers
- H01F10/10—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers characterised by the composition
- H01F10/12—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers characterised by the composition being metals or alloys
- H01F10/16—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers characterised by the composition being metals or alloys containing cobalt
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/82—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by variation of the magnetic field applied to the device
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N15/00—Thermoelectric devices without a junction of dissimilar materials; Thermomagnetic devices, e.g. using the Nernst-Ettingshausen effect
- H10N15/10—Thermoelectric devices using thermal change of the dielectric constant, e.g. working above and below the Curie point
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N15/00—Thermoelectric devices without a junction of dissimilar materials; Thermomagnetic devices, e.g. using the Nernst-Ettingshausen effect
- H10N15/10—Thermoelectric devices using thermal change of the dielectric constant, e.g. working above and below the Curie point
- H10N15/15—Thermoelectric active materials
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- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Ceramic Engineering (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Hall/Mr Elements (AREA)
- Thin Magnetic Films (AREA)
Description
以下、図面を参照して本発明の実施形態について説明する。図1は、第1の実施形態の熱電変換素子の例を示す概略構成図である。
・情報処理装置21などによる処理動作のためのプログラム
・機械学習用のプログラム
・第一原理計算、分子運動力学等の計算プログラム
・コンビナトリアル法などによって得られた各種材料に関する実験データ(材料実験データ)
・第一原理計算や分子運動力学法などによって得られた各種材料に関する計算データ(材料計算データ)
・機械学習結果(材料解析データ)
次に、本発明の第2の実施形態について説明する。図14は、本実施形態の熱電変換素子10Aの例を示す概略構成図である。図14に示すように、本実施形態の熱電変換素子10Aは、第1の実施形態の熱電変換素子10と比べて基板13をさらに備える点が異なる。
次に、本発明の第3の実施形態について説明する。図15は、本実施形態の熱電変換素子10Bの例を示す概略構成図である。図15に示すように、本実施形態の熱電変換素子10Bは、基板13上に、スピンゼーベック材料14を備え、その上に異常ネルンスト材料11を備える。また、異常ネルンスト材料11には少なくとも一対の端子12が備え付けられる。端子12は、例えば、異常ネルンスト材料11の両端(例えば、一方の表面の長手方向の端部)に備え付けられてもよい。異常ネルンスト材料11およびスピンゼーベック材料14は、例えば、所定の厚さを有する構造体(薄膜等)として形成される。なお、該構造体は、所定の一方向に伸延する形状(細線形状等)であってもよい。
次に、本発明の第4の実施形態について説明する。図16は、本実施形態の熱電変換素子10Cの例を示す概略構成図である。図16に示すように、本実施形態の熱電変換素子10Cは、基板13上に、異常ネルンスト材料とスピンゼーベック材料のハイブリッド構造である発電構造体15を備える。また、発電構造体15には、少なくとも一対の端子12が備え付けられる。端子12は、例えば、発電構造体15の両端(例えば、一方の表面の長手方向の端部)に備え付けられてもよい。発電構造体15(異常ネルンスト材料とスピンゼーベック材料のハイブリッド構造)は、例えば、所定の厚さを有する構造体(薄膜等)として形成される。なお、発電構造体15は、所定の一方向に伸延する形状でもよい。また、熱電変換素子10Cは、第2の実施形態のように、基板13をさらに備えていてもよい。
第1の実施例として、図14に示す熱電変換素子10Aを作製した。本例の熱電変換素子10Aに使用した異常ネルンスト材料11は、上記のM1~M4である。また、基板13には、Si基板を用いた。また、端子12材料には、Cuを用いた。
実施例1により、CoとPtの薄膜合金にNをより多く挿入するほど、異常ネルンスト効果による熱電効率がより大きくなることが示された。そこで、CoとPtのバルク型合金にNを挿入しても、異常ネルンスト効果による熱起電力が大きくなることが期待される。
実施例1により、CoとPtの薄膜合金にNをより多く挿入するほど、異常ネルンスト効果による熱電効率がより大きくなることが示された。そこで、さらに、その異常ネルンスト材料にスピンゼーベック材料を組み込むことによって、さらなる熱起電力の向上が期待できる。
11、151 異常ネルンスト材料
12 端子
13 基板
14、152 スピンゼーベック材料
15 発電構造体
20 材料開発システム
21 情報処理装置
22 記憶装置
23 入力装置
24 表示装置
25 通信装置
211 結晶構造決定手段
212 計算データ変換手段
213 解析手段
Claims (8)
- 異常ネルンスト効果を発現する異常ネルンスト材料を備え、
前記異常ネルンスト材料は、逆スピンホール効果を発現する元素を少なくとも含み、かつ前記逆スピンホール効果を発現する元素がスピン偏極しており、
前記異常ネルンスト材料は、3種以上の元素からなる多元系であって、磁性体金属に属する第1の元素、前記逆スピンホール効果を発現する元素である第2の元素、および前記第2の元素をスピン偏極させるもしくは前記第2の元素のスピン偏極率を向上させる第3の元素を少なくとも含み、
前記異常ネルンスト材料における前記第1の元素に対する前記第2の元素の組成比が、0.7以上1.3以下である
ことを特徴とする熱電変換素子。 - 前記異常ネルンスト材料の異常ネルンスト効果によって得られる規格化されたボルテージが21μV/K以上である
請求項1に記載の熱電変換素子。 - 前記逆スピンホール効果を発現する元素のスピン偏極率が0.15以上である
請求項1または請求項2に記載の熱電変換素子。 - 前記逆スピンホール効果を発現する元素が、4d軌道以上に電子を有する元素である
請求項1から請求項3のいずれかに記載の熱電変換素子。 - 前記逆スピンホール効果を発現する元素がPtである
請求項4に記載の熱電変換素子。 - 前記第3の元素が、第1族~第2族元素および第8~第12族元素のいずれか、または第2周期元素のいずれかである
請求項1から請求項5のいずれかに記載の熱電変換素子。 - 前記異常ネルンスト材料の全原子数に対して前記第3の元素に相当する原子が占める割合が、0.02以上である
請求項1から請求項6のいずれかに記載の熱電変換素子。 - 前記異常ネルンスト材料は、Con1Ptn2N1-n1-n2(ただし、0<n1<1、0<n2<1、0<n1+n2<1)である
請求項1から請求項7のいずれかに記載の熱電変換素子。
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PCT/JP2018/030235 WO2019064972A1 (ja) | 2017-09-28 | 2018-08-13 | 熱電変換素子 |
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WO2023054583A1 (ja) * | 2021-09-30 | 2023-04-06 | 国立研究開発法人物質・材料研究機構 | 熱電体、熱電発電素子、多層熱電体、多層熱電発電素子、熱電発電機、及び熱流センサ |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2014072256A (ja) | 2012-09-28 | 2014-04-21 | Tohoku Univ | 熱電発電デバイス |
JP2016103535A (ja) | 2014-11-27 | 2016-06-02 | トヨタ自動車株式会社 | 熱電体 |
WO2017082266A1 (ja) | 2015-11-13 | 2017-05-18 | 日本電気株式会社 | 熱電変換素子用起電膜及び熱電変換素子 |
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- 2018-08-13 JP JP2019544398A patent/JP7006696B2/ja active Active
- 2018-08-13 US US16/651,914 patent/US20200313062A1/en not_active Abandoned
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JP2014072256A (ja) | 2012-09-28 | 2014-04-21 | Tohoku Univ | 熱電発電デバイス |
JP2016103535A (ja) | 2014-11-27 | 2016-06-02 | トヨタ自動車株式会社 | 熱電体 |
WO2017082266A1 (ja) | 2015-11-13 | 2017-05-18 | 日本電気株式会社 | 熱電変換素子用起電膜及び熱電変換素子 |
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