Investigation of thermal conductivity mechanism controlled by magnetic field and its application to novel thermoelectric devices

2016 Fiscal Year Final Research Report

• Project/Area Number: 15K14170
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Structural/Functional materials
• Research Institution: Japan Synchrotron Radiation Research Institute
• Principal Investigator: Satoshi Tsutsui 公益財団法人高輝度光科学研究センター, 利用研究促進部門, 主幹研究員 (70360823)
• Co-Investigator(Renkei-kenkyūsha): Yoshio Kobayashi 電気通信大学, 情報理工学系研究科, 教授 (30221245)
• Research Collaborator: Goh Swee K. the Chinese University of Hong Kong
• Project Period (FY): 2015-04-01 – 2017-03-31
• Keywords: カゴ状物質 / ゲスト原子 / フォノン / 熱伝導度 / 磁性

Outline of Final Research Achievements

This study has been focused on cage-structured compounds expected to be a candidate of thermoelectric materials. Particularly, we have investigated cage-structured compounds having a magnetic guest atom, which is important for thermal insulation, in order to reveal relationships between thermal insulation and magnetic properties in cage-structured compounds. One of the important obtained in the present work is the fact that guest atomic motions in type-I clathrates, which correlate with thermal insulation, are more sensitive to number of their carriers than their ferromagnetic ordering.

Free Research Field

固体物理、放射光実験