Investigation of anomalous Nernst effect for innovativce thermoelectric technology

2016 Fiscal Year Final Research Report

• Project/Area Number: 26709045
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Partial Multi-year Fund
• Research Field: Physical properties of metals/Metal-base materials
• Research Institution: National Institute for Materials Science
• Principal Investigator: Sakuraba Yuya 国立研究開発法人物質・材料研究機構, 磁性・スピントロニクス材料研究拠点, 主任研究員 (10451618)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 熱電発電 / 異常ネルンスト効果 / スピントロニクス / ホイスラー合金

Outline of Final Research Achievements

Anomalous Nernst effect is the thermoelectric phenomena in which an electric field appears to outer product direction between temperature gradient and magnetization. Anomalous Nernst electric field always appear to parallel direction to the surface of heat source, therefore, it is easy to increase serious voltage by making a laterally connected thermopile structure. This simple structure enable us to increase effective heat source area with low cost, which is essential advantage for thermoelectric applications especially for energy harvesting. In this project, we focused on Heusler compounds to observe higher signal of anomalous Nernst effect. As a result of systematic analysis of crystal structure, Seebeck effect, anomalous Hall and Nernst effects in Heusler, finally we have successfully obtained tentative strategy to explore new materials showing high anomalous Nernst effect, which will be beneficial for further development of anomalous Nernst based novel thermoelectric technology.

Free Research Field

スピントロニクス