教師資料查詢 | 類別: 期刊論文 | 教師: 張經霖 CHANG, HENRY CHING-LIN (瀏覽個人網頁)

標題:Thermoelectric property and x-ray absorption near edge structure studies on Si-doped CaMnO3−δ
學年104
學期2
出版(發表)日期2016/02/15
作品名稱Thermoelectric property and x-ray absorption near edge structure studies on Si-doped CaMnO3−δ
作品名稱(其他語言)
著者Chia-Jyi Liu; Ankam Bhaskar; J.J. Yuan; Zong-Ren Yang; Shih-Show Chen; Huang-Chin Chen; Fan-Wei Liao; Yu Ting Lin; Ping Hung Yeh; Chun-Yen Lai; Ching-Lin Chang
單位
出版者
著錄名稱、卷期、頁數Ceramics International 42(3), pp.4048–4053
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.
關鍵字A. Sintering;B. Electron microscopy;C. Electrical conductivity;Thermal properties;Thermal conductivity
語言英文
ISSN0272-8842;1873-3956
期刊性質國外
收錄於SCI;
產學合作
通訊作者Ching-Lin Chang
審稿制度
國別英國
公開徵稿
出版型式,電子版,紙本
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