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X-Ray photoelectron and infrared transmission spectra of manganite system La0.5-xBixCa0.5MnO3 (0 <= x <= 0.25)

文献类型:期刊论文

作者Wang, X ; Cui, QL ; Pan, YW ; Zou, GT
刊名JOURNAL OF ALLOYS AND COMPOUNDS
出版日期2003
卷号354期号:1-2页码:91
关键词FERROMAGNETIC PEROVSKITE BIMNO3 ABSORPTION FILMS CA MAGNETORESISTANCE LA1-XSRXMNO3 RESISTIVITY STATE
ISSN号0925-8388
通讯作者Wang, X (reprint author), Chinese Acad Sci, Lab Extreme Condit Phys, Inst Phys, Beijing 100080, Peoples R China.
中文摘要The results of measurements of X-ray photoelectron and infrared absorption spectra in the manganese oxides La0.5-xBixCa0.5MnO3 (x=0, 0.05, 0.1, 0.15, 0.2, 0.25) are presented. Compared with the energy exchange splitting in different valency Mn compounds, the average Mn valency in our samples is close to 3.5+. Infrared spectra show two strong absorption bands located around 600 and 420 cm(-1), which can be ascribed to the internal phonon modes nu(s) and nu(b). As the doping x increases, the band frequency of nu(s) decreases while the nu(b) band remains invariant. and a reversal of the intensity ratio of nu(s) to nu(b) is also observed. These results reflect the changes of the Mn-O bond length and the Mn-O-Mn bond angle of MnO6 octahedra along with the doping, and the changes are mainly influenced by the unique 6s(2) lone pair character of the doped Bi ions. (C) 2002 Elsevier Science B.V. All rights reserved.
收录类别SCI
语种英语
公开日期2013-09-23
源URL[http://ir.iphy.ac.cn/handle/311004/46702]  
专题物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式
GB/T 7714
Wang, X,Cui, QL,Pan, YW,et al. X-Ray photoelectron and infrared transmission spectra of manganite system La0.5-xBixCa0.5MnO3 (0 <= x <= 0.25)[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2003,354(1-2):91.
APA Wang, X,Cui, QL,Pan, YW,&Zou, GT.(2003).X-Ray photoelectron and infrared transmission spectra of manganite system La0.5-xBixCa0.5MnO3 (0 <= x <= 0.25).JOURNAL OF ALLOYS AND COMPOUNDS,354(1-2),91.
MLA Wang, X,et al."X-Ray photoelectron and infrared transmission spectra of manganite system La0.5-xBixCa0.5MnO3 (0 <= x <= 0.25)".JOURNAL OF ALLOYS AND COMPOUNDS 354.1-2(2003):91.

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来源:物理研究所

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