| 磷酸铕钠及其与磷酸钡钠的固溶体的合成、结构与性质的研究 |
| SODIUM EUROPIUM(Ⅱ) ORTHOPHOSPHATE AND ITS SOLID SOLUTIONS WITH SODIUM BARIUM ORTHOPHOSPHATE, THEIR SYNTHESES,STRUCTURES AND PROPERTIES |
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| 摘要: 用钠蒸气还原EuPO4合成了新化合物NaEuPO4其结构属三方晶系。空间群P3ml,a=549.9(2),c=696.1(2)pm,Z=2,Dx=4.917g·cm-3,Glaserite(KNaSO4)晶型。在晶体中铕(Ⅱ)和钠离子有序地分布在四个C3V格位上,具双中心荧光发射389.2,465.6nm.它与NaBaPO4可形成无限固溶体并且有很强的荧光。还报道了红外图谱。 |
| 关键词: 磷酸铕(Ⅱ) 磷酸钡钠 铕 希土 荧光 固溶体 |
| 基金项目: 国家自然科学基金;北师大青年科学基金 |
| Abstract: New compound containing divalcnt rare earth, sodium curopium(Ⅱ) orthophosphatc NaEuPO4, was synthesized by reducing monazite ouropium(Ⅲ) orthophosphatc with sodium vapour under 10(-3)Pa argon at 260-530℃ in a scaled glass double-cell. The product was characterized by ICP, chemical analysis, fluorescence spectroscopy, IR and X-ray powder diffraction.The new compound belongs to KNaSO4 structure type, trigonal, space group P3ml,a= 549.9(2), c= 696.12(2)pm, Z=2. A series of the solid solutions of NaEuPO4 and NaBaPO4 was also investigated. The crystal structural analysis and fluoreseence spectra of the series give the cvidence that in the crystal lattice of sodium curopium(Ⅱ) orthophosphate curopium ions are located at two different Wyckoff lattice sites with the coordination number 12 and 10, respectively. The fluorescence spectrum of the new compound has two emission peaks at 389.2 and 465.6nm, being suggested as a double-central emission. |
| Keywords: phosphate europium(Ⅱ) rare earth fluorescence solid solution crystal structure |
| 投稿时间：1993-12-04 |
| 摘要点击次数: 1314 |
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| 汤中佳,吴国庆,林平娣.磷酸铕钠及其与磷酸钡钠的固溶体的合成、结构与性质的研究[J].无机化学学报,1994,10(4):396-402. |
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