2010 Fiscal Year Final Research Report
Research of percolative thermoelectric materials by means of Thermoelectric-effect spectroscop
| Project/Area Number |
20560310
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Electronic materials/Electric materials
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| Research Institution | Oyama National College of Technology |
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Principal Investigator |
MORI Natsuki Oyama National College of Technology, 電気情報工学科, 教授 (60149911)
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| Project Period (FY) |
2008 – 2010
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| Keywords | 熱電効果 / パーコレーション現象 / 強相関エレクトロニクス / 電子・電気材料 / 環境技術 |
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| Research Abstract |
As a study of developing new thermoelectric materials, we have derived a simple but effective method for analyzing thermoelectric properties S(T) by shedding a light on the percolation (PC) phenomenon in ceramic systems. Experimentally, S(T) data in rare-earth element systems are analyzed in terms of our method and estimated a PC index Γ defined originally, revealing that the behavior of Γ is similar to that of the power factor P being used conventionally, which indicates that our method is effective for exploring new thermoelectric materials. Theoretically, we have proposed that the thermoelectric performance could be improved by modeling a two-band semiconductor.
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