The new phosphates Ca(9)MLn(2/3)(PO4)(7) (M=Li, Na; Ln equals rare earth, Y, Bi)

被引：31
作者：
Lazoryak, BI [1 ]
Strunenkova, TV [1 ]
Vovk, EA [1 ]
Mikhailin, VV [1 ]
Shpinkov, IN [1 ]
Romanenko, AY [1 ]
Schekoldin, VN [1 ]
机构：
[1] MOSCOW MV LOMONOSOV STATE UNIV,DEPT PHYS,MOSCOW 119899,RUSSIA
来源：
MATERIALS RESEARCH BULLETIN | 1996年 / 31卷 / 06期
关键词：
inorganic compounds; chemical synthesis; X-ray diffraction; infrared spectroscopy; luminescence;
D O I：
10.1016/0025-5408(96)00058-X
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The new family of triple phosphates Ca(9)MLn(2/3)(PO4)(7) (Ln = rare earth, Y, Bi; M = Li+, Na+) has been synthesized and studied by X-ray powder diffraction, IR-spectroscopy, differential thermal analyses and luminescence. All compounds have the whitlockite-like structure (space group R3c). Cell parameters, IR and emission (Eu3+) spectra are given. The luminescence properties of trivalent europium are analyzed in Ca9NaEu2/3(PO4)(7) and Ca9LiEu2/3(PO4)(7) at 290 K. The fluorescence lifetime of the F-4(3/2)-I-4(11/2) transition of Nd3+ is reported for the solid solutions Ca9NdxGd1-x(PO4)(7), Ca3-xNd2x/3(PO4)(2) and Ca(9)M(NdxGd1-x)(2/3)(PO4)(7) (M = Li, Na).
引用
收藏
页码：665 / 671
页数：7
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