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:Correlation between the electronic structure and the thermoelectric properties of Gd-doped CaMnO3-δ
學年102
學期1
出版(發表)日期2014/01/22
作品名稱Correlation between the electronic structure and the thermoelectric properties of Gd-doped CaMnO3-δ
作品名稱(其他語言)
著者Liu, Chia-Jyi; Wang, Wei-Cheng; Yuan, J.-J.; Chen, Jeng-Lung; Wu, Mei-Huei; Chang, Ching-Lin
單位淡江大學物理學系
出版者New York: Springer New York LLC
著錄名稱、卷期、頁數Journal of Electronic Materials 43(6), pp.2094-2098
摘要We report x-ray absorption near edge structure (XANES) on bulk samples of Ca1−x Gd x MnO3+δ with x = 0, 0.02, and 0.05. The transport properties measurements indicate that both resistivity and the absolute value of thermopower decrease with increasing x. Meanwhile, the temperature dependence of resistivity changes from non-metallic CaMnO3−δ to metallic for samples of x = 0.02 and 0.05. XANES spectra at the O K-edge, Mn L 2,3-edge, and Ca L 2,3-edge indicate that Mn 3d–O 2p hybridization increases considerably, and unoccupied (3d–4s) states of Ca decrease with increasing substitution content. The increases of Mn 3d–O 2p hybridization might be responsible for the decrease of the resistivity and the absolute value of thermopower upon partial Gd substitution for Ca.
關鍵字Thermoelectric property;manganese oxide;XANES;carrier concentration
語言英文(美國)
ISSN1543-186X
期刊性質國外
收錄於SCI;
產學合作
通訊作者
審稿制度
國別美國
公開徵稿
出版型式,電子版,紙本
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