Thermoelectric properties of the ceramic oxide Sr1↿em>x La x TiO3
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- 作者：Iqbal Mahmud ; Man-Soon Yoon ; Il-Ho Kim…
- 关键词：Thermoelectric properties ; XRD ; Oxide ceramic ; SrTiO3
- 刊名：Journal of the Korean Physical Society
- 出版年：2016
- 出版时间：January 2016
- 年：2016
- 卷：68
- 期：1
- 页码：35-40
- 全文大小：838 KB
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Man-Soon Yoon (1)
Il-Ho Kim (1)
Moon-Kwan Choi (1)
Soon-Chul Ur (1)
1. Department of Materials Science and Engineering/Research Center for Sustainable ECo-Devices and Materials (RIC-ReSEM), Korea National University of Transportation, Chungju, 27469, Korea - 刊物主题：Physics, general; Theoretical, Mathematical and Computational Physics; Particle and Nuclear Physics;
- 出版者：Springer Netherlands
- ISSN：1976-8524
文摘
The effect of lanthanum on the electric and the thermoelectric properties of the ceramic oxide Sr1−talic ">x La x TiO3 (where x = 0.0, 0.04, 0.06, 0.08 and 0.12 mole) have been studied. La-doped SrTiO3 was prepared by using the conventional mixed-oxide reaction method. XRD patterns indicated that almost all the La atoms incorporated into the SrTiO3 crystal provided charge carriers. The lattice parameter increases with increasing La doping content. The relative densities of all the samples varied from 89.6% to 94.8%. The electrical conductivity increased with La doping up to 0.08 moles and then decreased as the content of La was increased above 0.08 moles. The thermal conductivity decreased with increasing La content. The largest absolute value of the Seebeck coefficient, 394 μVK−1 at 973 K, was observed at x = 0.04. The Sr0.92La0.08TiO3 sample showed its maximum electrical conductivity at 773 K and its largest ZT value of 0.20 at 973 K.