| Properties of Local Structure Surrounding Eu3＋ Ion in Various Niobate-Silicate Glasses |
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| 引用本文： | 王绩伟,宋宏伟,夏海平,吕少哲,许武,张家骅.Properties of Local Structure Surrounding Eu3＋ Ion in Various Niobate-Silicate Glasses[J].中国稀土学报(英文版),2003,21(4):404-408. |
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| 作者姓名： | 王绩伟 宋宏伟 夏海平 吕少哲 许武 张家骅 |
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| 作者单位： | [1]KeyLaboratoryofExcitedStatePhysics,ChangchunInstituteofOptics,FineMechanicsandPhysics,ChineseAcademyofSciences,Changchun130022,China [2]LaboratoryofPhotoelectricMaterials,NingboUniversity,Ningbo315211,China |
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| 基金项目： | ProjectsupportedbyOneHundredTalentsProjectfromChineseAcademyofSciences |
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| 摘 要： | A Series of niobate-silicate glasses doped with Eu3 ions were prepared. The emission, phonon-side band spectra, fluorescence line narrowing spectroscopy and fluorescence lifetimes in these glasses were studied. The intensity parameters and crystal field parameter of Eu3 were obtained. The results indicate that the intensity ratio of the electric-dipole to magnetic-dipole transition and the intensity parameter Ω2 increase with the increasing concentration of Nb2Os, indicating that the symmetry becomes lower, the Eu-O bonds become stronger and the covalency of Eu-O bond increases. The value of B20 decreases with the increasing concentration of Nb2O5, indicating that the distance between the Eu3 ion and oxygen decreases and the Eu-O bond becomes strong, corresponding to the results of the former. As the concentration of Nb2O5 increases, the electron-phonon coupling becomes stronger, thus the nonradiative transition rate of 5Do becomes larger and the lifetime of 5D0 becomes shorter.
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| 关 键 词： | 铌酸盐玻璃 硅酸盐玻璃 铕离子 结构 性能 |
Properties of Local Structure Surrounding Eu3+ Ion in Various Niobate-Silicate Glasses |
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| Wang Jiwei ,Song Hongwei ,Xia Haiping ,Lu Shaozhe ,Xu Wu ,Zhang Jiahua.Properties of Local Structure Surrounding Eu3+ Ion in Various Niobate-Silicate Glasses[J].Journal of Rare Earths,2003,21(4):404-408. |
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| Authors: | Wang Jiwei Song Hongwei Xia Haiping Lu Shaozhe Xu Wu Zhang Jiahua |
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| Affiliation: | Wang Jiwei 1,Song Hongwei 1*,Xia Haiping 2,Lu Shaozhe 1,Xu Wu 1,Zhang Jiahua 1 |
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| Abstract: | A Series of niobate-silicate glasses doped with Eu3+ ions were prepared. The emission, phonon-side band spectra, fluorescence line narrowing spectroscopy and fluorescence lifetimes in these glasses were studied. The intensity parameters and crystal field parameter of Eu3+ were obtained. The results indicate that the intensity ratio of the electric-dipole to magnetic-dipole transition and the intensity parameter Ω2 increase with the increasing concentration of Nb2O5, indicating that the symmetry becomes lower, the Eu-O bonds become stronger and the covalency of Eu-O bond increases. The value of B20 decreases with the increasing concentration of Nb2O5, indicating that the distance between the Eu3+ ion and oxygen decreases and the Eu-O bond becomes strong, corresponding to the results of the former. As the concentration of Nb2O5 increases, the electron-phonon coupling becomes stronger, thus the nonradiative transition rate of 5D0 becomes larger and the lifetime of 5D0 becomes shorter. |
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| Keywords: | optics Eu 3+ doped niobat silicate glass intensity parameters lifetime phonon side bands crystal field parameters rare earths |
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