Journal of Solid State Chemistry ( IF 3.2 ) Pub Date : 2017-10-29 , DOI: 10.1016/j.jssc.2017.10.034 Christian Pflug , Alexandra Franz , Holger Kohlmann
The solid solution series NaMgH3−xFx (x = 0, 0.5, 1, 1.5, 2, 2.5, 3) was synthesized by solid-state reactions under hydrogen gas pressure from binary ionic hydrides, fluorides and magnesium. Rietveld refinement based on X-ray powder diffraction data revealed the GdFeO3-structure type for all compounds and a trend of lattice parameters according to Vegard's law. The anion distribution in NaMgD2F and NaMgD1.5F1.5 was found to be statistical by Rietveld refinement based on neutron powder diffraction data. Photoluminescence measurements on europium(II) substituted NaMgH3−xFx revealed a strong red shift of the emission wavelength (λem = 665 nm for NaMgH2F:Eu) in comparison to violet emitting NaMgF3:Eu.
中文翻译:
NaMgH 3−x F x的晶体结构和euro发光
固溶体系列NaMgH 3-x F x(x = 0、0.5、1、1.5、2、2.5、3 )是在氢气压力下通过固相反应由二元离子氢化物,氟化物和镁合成的。基于X射线粉末衍射数据的Rietveld精炼揭示了所有化合物的GdFeO 3结构类型以及根据Vegard定律的晶格参数趋势。根据中子粉末衍射数据,通过Rietveld精炼发现NaMgD 2 F和NaMgD 1.5 F 1.5中的阴离子分布是统计的。euro(II)取代的NaMgH 3−x F x的光致发光测量显示发射波长有很强的红移λ EM = 665 为NaMgH纳米2 F:Eu)的相比,紫色发光NaMgF 3:Eu等。