光谱学与光谱分析 |
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Synthesis and Spectral Properties of Eu3+-Doped MCeO3(M=Sr, Ba) |
FU Shi-liu,YIN Tao,DING Qiu-ke,ZHAO Wei-ren |
Department of Physics, Shantou University, Shantou 515063, China |
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Abstract Eu3+-doped MCeO3(M=Sr, Ba) powder samples were prepared by a solid-state method, and their characteristics were investigated by the use of XRD and fluorescence spectra. The XRD results show that Eu3+ ions have a preference for M2+ over Ce4+ sites in MCeO3(M=Sr, Ba) lattice. The excitation spectra of SrCeO3∶Eu3+ and BaCeO3∶Eu3+ display a much broad absorption band peaking at about 311 nm and 320 nm, respectively. This broad band is attributed to the charge transfer from O2- to Ce4+ and the energy transfer from SrCeO3 and BaCeO3 to Eu3+. In the MCeO3∶Eu3+ samples, the emission transitions of Eu3+ originating from 5D1 and 5D0 excited states can be observed, among which the 5D0—7F1 magnetic-dipole transition is the most intense emission. The emission of Eu3+ from the Eu3+ doped SrCeO3 lattice is much stronger than that of Eu3+ from the Eu3+ doped BaCeO3 lattice.
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Received: 2006-03-16
Accepted: 2006-07-31
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Corresponding Authors:
FU Shi-liu
E-mail: gongy@stdx.com
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Cite this article: |
FU Shi-liu,YIN Tao,DING Qiu-ke, et al. Synthesis and Spectral Properties of Eu3+-Doped MCeO3(M=Sr, Ba)[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2007, 27(05): 854-857.
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URL: |
https://www.gpxygpfx.com/EN/Y2007/V27/I05/854 |
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