Na2BaMg(PO4)2:synthesis, crystal structure and europium photoluminescence properties

稀土学报(英文版), 2013, (9): 849-856. doi: 10.1016/S1002-0721(12)60369-X

^1, , ^2, , ^3, , ^4,

1.Inorganic Materials, Faculty of Science, University of Monastir, 5019, Monastir-Tunisia

2.Inorganic Materials, Faculty of Science, University of Monastir, 5019, Monastir-Tunisia

3.Institute for Condensed Mat er Chemistry of Bordeaux, CNRS, University of Bordeaux I, 87, Avenue of Dr. A. Schweitzer, 33608 Pessac-Cedex, France

4.Inorganic Materials, Faculty of Science, University of Monastir, 5019, Monastir-Tunisia

Na2BaMg(PO4)2:synthesis, crystal structure and europium photoluminescence properties

Amal Boukhris ^1, , Mourad Hidouri ^2, , Benoit Glorieux ^3, , Mongi Ben Amara ^4,

1.Inorganic Materials, Faculty of Science, University of Monastir, 5019, Monastir-Tunisia

2.Inorganic Materials, Faculty of Science, University of Monastir, 5019, Monastir-Tunisia

3.Institute for Condensed Mat er Chemistry of Bordeaux, CNRS, University of Bordeaux I, 87, Avenue of Dr. A. Schweitzer, 33608 Pessac-Cedex, France

4.Inorganic Materials, Faculty of Science, University of Monastir, 5019, Monastir-Tunisia

Keywords： phosphate

Na2BaMg(PO4)2 was synthesized and characterized by X-ray diffraction, differential thermal analysis (DTA), 31P NMR spectroscopy and photoluminescence measurements. This compound crystallized in the P3m1 space group of the trigonal system with the parameters of equivalent hexagonal cell a=0.5305(1) nm and c=0.6986(3) nm. The structure showed a perfect isotipysm with the mineral glaserite K3Na(SO4)2. Thus, it exhibited a lamellar framework which could be described as the stacking along the [001] direc-tion of [MgP2O84-]∞layers of corner sharing MgO6 polyhedra and PO4 tetrahedra. The Ba2+cations were located within the interlayer space, while the Na+ones were found in large cavities bound to the layers. The DTA analysis showed that this compound melt con-gruently at 1385 K. The 31P NMR spectrum was consistent with the presence of a single phosphorus site in the structure. Optical properties were investigated for the 5%doped Eu3+and Eu2+phases. The trivalent europium was used as a local probe, replacing bar-ium while the divalent europium was used to examine whether this material could be used as an optical applications.

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Na2BaMg(PO4)2:synthesis, crystal structure and europium photoluminescence properties

参考文献