2010 Fiscal Year Final Research Report
Influence of defect on thermoelectric properties of metal-hexaborides
| Project/Area Number |
20560613
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
Physical properties of metals
|
|---|
| Research Institution | Nagaoka University of Technology |
|---|
Principal Investigator |
TAKEDA Masatoshi Nagaoka University of Technology, 工学部, 准教授 (30293252)
|
|---|
| Project Period (FY) |
2008 – 2010
|
| Keywords | 熱電変換材料 / ゼーベック係数 / 電気伝導率 / キャリア濃度 / 格子欠陥 / 結晶構造解析 |
|---|
| Research Abstract |
Influence of defect on the thermoelectric properties of divalent hexaborides (CaB_6, SrB_6, YbB_6) were examined. Carrier concentration of the hexabiredes we examined was changed by synthesis condition, and as the result, electrical conductivity and the Seebeck coefficient were varied as a function of the carrier concentration. Chemical and crystal structure analyses revealed that metaliboron ratio affects the carrier concentration. In addition, p-n control was demonstrated in the YbB_6.
|
