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XANES at Eu-L3 edge and valence of europium in SrB_4O_7: Eu and BaB_8O_(13): Eu |
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| Authors: | LIANG Hong-Bin HU Tian-Dou WANG Shu-BinZENG Qing-Hua PEI Zhi-Wu SU Qiang Laboratory of Rare Earth Chemistry and Physics Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun Jilin China Laboratory of Synchrontron Radiation |
| Institution: | LIANG,Hong-Bin HU,Tian-Dou WANG,Shu-BinZENG,Qing-Hua PEI,Zhi-Wu SU,Qiang Laboratory of Rare Earth Chemistry and Physics,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun,Jilin 130022,China Laboratory of Synchrontron Radiation,Institute of High Energy Physics,Chinese Academy of Sciences,Beijing,100039,China |
| Abstract: | The luminescent materials SrB4O7: Eu and BaB8O13: Eu were synthesized, and the valence states of europium in the materials were measured by means of XANES at Eu-L3 edge. It is found that the Eu3 and Eu2 ions are all present in the materials, and more Eu3 ions can be reduced in SrB4O7: Eu than in BaB8O13:Eu. The excitation and emission spectra of Eu3 in SrB4O7: Eu and BaB8O13:Eu were determined. |
| Keywords: | Strontium tetraborate barium octaborate europium valence state XANES luminescence |
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