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Thermoelectric Properties of Combustion-Synthesized Lanthanum-Doped Strontium Titanate
| Title: | Thermoelectric Properties of Combustion-Synthesized Lanthanum-Doped Strontium Titanate |
| Authors: | Zhang, Lihua Browse this author →KAKEN DB | | Tosho, Tsuyoshi Browse this author | | Okinaka, Noriyuki Browse this author →KAKEN DB | | Akiyama, Tomohiro Browse this author →KAKEN DB |
| Keywords: | thermoelectric materials | | perovskite oxide | | combustion synthesis |
| Issue Date: | 1-May-2007 |
| Publisher: | The Japan Institute of Metals |
| Journal Title: | MATERIALS TRANSACTIONS |
| Volume: | 48 |
| Issue: | 5 |
| Start Page: | 1079 |
| End Page: | 1083 |
| Publisher DOI: | 10.2320/matertrans.48.1079 |
| Abstract: | The possibility of combustion synthesis of perovskite-oxide thermoelectric materials with the attendant saving of energy and time and without deterioration in the thermoelectric properties was investigated by evaluating the thermoelectric properties of lanthanum-doped strontium titanate (Sr1−xLaxTiO3, 0≤x≤0.1). The materials were successfully combustion synthesized and spark plasma sintered with 98.0–99.6% of true density, and their thermoelectric properties were evaluated from room temperature to 850 K. The optimal lanthanum doping amount ratio x in the considered temperature range was from 0.06 to 0.08, in which Sr0.92La0.08TiO3 sample showed the maximum ZT of 0.22 at 800 K. This value was close to the highest recorded ZT at the same temperature up to now, and the ZT of most samples are higher than those synthesized by the conventional solid state reaction method. Thus, combustion synthesis is promising for producing perovskite-oxide thermoelectric materials for high-temperature application. |
| Type: | article |
| URI: | http://hdl.handle.net/2115/77071 |
| Appears in Collections: | 工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 張 麗華
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