Thermoelectric properties of Li-doped Sr0.7Ba0.3Nb2O6-δ ceramics

doi:10.1088/1674-1056/26/10/107201

中国物理B ›› 2017, Vol. 26 ›› Issue (10): 107201-107201.doi: 10.1088/1674-1056/26/10/107201

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇下一篇

Thermoelectric properties of Li-doped Sr_0.7Ba_0.3Nb₂O_6-δ ceramics

Ya-Cui Zhang(张亚翠), Jian Liu(刘剑), Yi Li(李宜), Yu-Fei Chen(陈宇飞), Ji-Chao Li(李吉超), Wen-Bin Su(苏文斌), Yu-Cheng Zhou(周昱成), Jin-Ze Zhai(翟近泽), Teng Wang(王腾), Chun-Lei Wang(王春雷)

School of Physics, State Key Laboratory of Crystal Materials, Shandong University, Ji'nan 250100, China

收稿日期:2017-06-22 修回日期:2017-07-24 出版日期:2017-10-05 发布日期:2017-10-05
通讯作者: Jian Liu E-mail:liujjx@sdu.edu.cn
基金资助:
Project supported by the National Basic Research Program of China (Grant No. 2013CB632506) and the National Natural Science Foundation of China (Grant Nos. 51202132, 51231007, and 11374186).

Thermoelectric properties of Li-doped Sr_0.7Ba_0.3Nb₂O_6-δ ceramics

School of Physics, State Key Laboratory of Crystal Materials, Shandong University, Ji'nan 250100, China

Received:2017-06-22 Revised:2017-07-24 Online:2017-10-05 Published:2017-10-05
Contact: Jian Liu E-mail:liujjx@sdu.edu.cn
Supported by:
Project supported by the National Basic Research Program of China (Grant No. 2013CB632506) and the National Natural Science Foundation of China (Grant Nos. 51202132, 51231007, and 11374186).

摘要/Abstract

摘要：

Thermoelectric properties of Li-doped Sr_0.70Ba_0.30Nb₂O_6-δ ceramics were investigated in the temperature range from 323 K to 1073 K. The electrical conductivity increases significantly after lithium interstitial doping. However, both of the magnitudes of Seebeck coefficient and electrical conductivity vary non-monotonically but synchronously with the doping contents, indicating that doped lithium ions may not be fully ionized and oxygen vacancy may also contribute to carriers. The lattice thermal conductivity increases firstly and then decreases as the doping content increases, which is affected by competing factors.Thermoelectric performance is enhanced by lithium interstitial doping due to the increase of the power factor and the thermoelectric figure of merit reaches maximum value (0.21 at 1073 K) in the sample Sr_0.70Ba_0.30Li_0.10Nb₂O₆.

关键词: Sr_0.7Ba_0.3Nb₂O_6-δ, interstitial doping, thermoelectric properties

Abstract:

Key words: Sr_0.7Ba_0.3Nb₂O_6-δ, interstitial doping, thermoelectric properties

中图分类号: (Thermoelectric and thermomagnetic effects)

72.20.Pa

72.80.Ga (Transition-metal compounds)

张亚翠, 刘剑, 李宜, 陈宇飞, 李吉超, 苏文斌, 周昱成, 翟近泽, 王腾, 王春雷. Thermoelectric properties of Li-doped Sr_0.7Ba_0.3Nb₂O_6-δ ceramics[J]. 中国物理B, 2017, 26(10): 107201-107201.

Ya-Cui Zhang(张亚翠), Jian Liu(刘剑), Yi Li(李宜), Yu-Fei Chen(陈宇飞), Ji-Chao Li(李吉超), Wen-Bin Su(苏文斌), Yu-Cheng Zhou(周昱成), Jin-Ze Zhai(翟近泽), Teng Wang(王腾), Chun-Lei Wang(王春雷). Thermoelectric properties of Li-doped Sr_0.7Ba_0.3Nb₂O_6-δ ceramics[J]. Chin. Phys. B, 2017, 26(10): 107201-107201.

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Thermoelectric properties of Li-doped Sr_0.7Ba_0.3Nb₂O_6-δ ceramics

Thermoelectric properties of Li-doped Sr_0.7Ba_0.3Nb₂O_6-δ ceramics

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