Thermoelectric property and x-ray absorption near edge structure studies on Si-doped CaMnO3−δ

淡江大學機構典藏 > 理學院 > 物理學系暨研究所 > 期刊論文 > Item 987654321/108298

jsp.display-item.identifier=請使用永久網址來引用或連結此文件: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/108298

题名:	Thermoelectric property and x-ray absorption near edge structure studies on Si-doped CaMnO3−δ
作者:	Liu, Chia-Jyi;Bhaskar, Ankam;Yuan, J.J.;Yang, Zong-Ren;Chen, Shih-Show;Chen, Huang-Chin;Liao, Fan-Wei;Lin, Yu Ting;Yeh, Ping Hung;Lai, Chun-Yen;Chang, Ching-Lin
关键词:	A. Sintering;B. Electron microscopy;C. Electrical conductivity;Thermal properties;Thermal conductivity
日期:	2015-11-22
上传时间:	2016-11-23 02:10:32 (UTC+8)
出版者:	Pergamon Press
摘要:	We report electrical resistivity, thermopower and Ca K-, Mn L2,3- and O K-edges x-ray absorption near edge structure (XANES) studies on CaMn1−xSixO3−δ with x=0, 0.02, and 0.05. The transport properties measurements indicate that the sample of x=0.02 has the lowest electrical resistivity compared to the samples of x=0 and 0.05. Meanwhile, the temperature dependence of thermopower behaves significantly different for samples of x=0.02 and 0.05. These unusual phenomena are elucidated based on the charge transfer equilibrium principle together with the XANES results, which show that the Si substitution for Mn appears to generate an electron doping effect and lattice distortion. Among the samples, CaMn0.98Si0.02O3−δ exhibits the highest figure of merit of 0.0128 at 300 K. This value represents an improvement of about 52% compared to pristine CaMnO3−δ.
關聯:	Ceramics International 42(3), pp.4048–4053
DOI:	10.1016/j.ceramint.2015.11.076
显示于类别:	[物理學系暨研究所] 期刊論文

文件中的档案:

档案	描述	大小	格式	浏览次数
index.html		0Kb	HTML	291	检视/开启

在機構典藏中所有的数据项都受到原著作权保护.

TAIR相关文章