Direct experimental evidence of hybridization of Pb states with O 2p states in ferroelectric perovskite oxides
學年 93
學期 2
出版（發表）日期 2005-07-04
作品名稱 Direct experimental evidence of hybridization of Pb states with O 2p states in ferroelectric perovskite oxides
作品名稱（其他語言）
著者 Jan, J. C.; Tsai, H. M.; Pao, C. W.; Chiou, J. W.; Asokan, K.; Kumar, K. P. K.; Pong, W. F.; Tang, Y. H.; 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 87(1), pp.012103(3 pages)
摘要 This work presents the O K- and Ti L3,2-edge x-ray absorption near-edge structure (XANES) spectra of PbxSr1-xTiO3 (PxSTO) and BaxSr1-xTiO3 (BxSTO) compounds with various Pb and Ba concentrations. The result provides direct evidence that the Pb–O bonding strongly affects O 2p–Ti 3d hybridization in the TiO6 octahedron of PxSTO. In contrast, the Ba–O bonding does not substantially affect O 2p–Ti 3d hybridization in BxSTO. The Ti L3-edge XANES spectra show the splitting of the eg band for PxSTO with x≳0.5, which provides an evidence of Pb-induced tetragonal distortion in the TiO6 octahedron. In contrast, eg band splitting is absent in BxSTO.
關鍵字
語言 en
ISSN 0003-6951
期刊性質 國外
收錄於 SCI
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
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