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Thermoelectric Properties of Combustion-Synthesized Lanthanum-Doped Strontium Titanate

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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
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
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)

Submitter: 張 麗華

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