Effect of the Ca content on the electronic structure of Pb<SUB>1-x</SUB>Ca<SUB>x</SUB>TiO<SUB>3</SUB> perovskite
學年 92
學期 1
出版（發表）日期 2003-10-20
作品名稱 Effect of the Ca content on the electronic structure of Pb<SUB>1-x</SUB>Ca<SUB>x</SUB>TiO<SUB>3</SUB> perovskite
作品名稱（其他語言）
著者 Jan, J. C.; Krishna Kumar, K. P.; Chiou, J. W.; Tsai, H. M.; Shih, H. L.; Hsueh, H. C.; Ray, S. C.; Asokan, K.; Pong, W. F.; Tsai, M. H.; Kuo, S. Y.; Hsieh, W. F.
單位 淡江大學物理學系
出版者 College Park: American Institute of Physics (AIP)
著錄名稱、卷期、頁數 Applied Physics Letters 83(16), pp.3311-3313
摘要 This study performs O K- and Ti L3,2-edge x-ray absorption near-edge structure ~XANES! measurements and first-principles pseudopotential calculations for the electronic structures of ABO3-type Pb12xCaxTiO3 (x50 – 1) perovskites. The features in the O K-edge XANES spectra are found to be contributed primarily by hybridization between O 2p and Ti 3d, Pb 6p, and Ca 3d orbitals. The O K-edge XANES spectra reveal that partial substitution of A cations, Pb, by Ca not only decreases O 2p– Pb 6p but also O 2p– Ti 3d hybridization. The Ti L3,2-edge measurements find that the off-center displacement of Ti, and hence, ferroelectricity persist up to a Ca concentration between 0.3 and 0.4.
關鍵字
語言 en
ISSN 0003-6951
期刊性質 國外
收錄於
產學合作
通訊作者 Pong, W. F.
審稿制度
國別 USA
公開徵稿
出版型式 紙本 電子版
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