Synthesis, characterization and spectroscopy of the europium doped lanthanum trimetaphosphate
Contribuinte(s) |
Universidade Estadual Paulista (UNESP) |
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Data(s) |
27/05/2014
27/05/2014
24/07/1998
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Resumo |
Orthorhombic modification of europium doped lanthanum trimetaphosphate has been prepared. The compound was obtained by precipitation of rare earth chloride solution with trimetaphosphoric acid. The characterizations were made using X-ray diffractometry, chemical analysis and infrared spectroscopy. Excitation and emission spectra were recorded at liquid nitrogen and room temperatures. Assignments of the 5D0→7FJ (J=0, 1, 2, 3, 4, 5) transitions were made and an unusual high 5D0→7F4 transition intensity with six split lines has been observed. Structural distortion of the crystal lattice may be caused by the Eu3+ ion inclusion. The simple overlap model was applied for the calculation of the total splitting of the 5D0→7F1 transition, the 5D0→7F0/5D 0→7F2 transition intensity ratio and the Ωλ (λ=2.4) intensity parameters. Theoretical predictions showed to be in good accordance with the experimental data. © 1988 Elsevier Science S.A. |
Formato |
86-88 |
Identificador |
http://dx.doi.org/10.1016/S0925-8388(98)00279-5 Journal of Alloys and Compounds, v. 275-277, p. 86-88. 0925-8388 http://hdl.handle.net/11449/65478 10.1016/S0925-8388(98)00279-5 WOS:000075617700020 2-s2.0-0032118816 |
Idioma(s) |
eng |
Relação |
Journal of Alloys and Compounds |
Direitos |
closedAccess |
Palavras-Chave | #F-f intensities #Lanthanide trimetaphosphate #Orthorhombic structure #Chemical modification #Chlorine compounds #Crystal lattices #Doping (additives) #Electron transitions #Europium #Infrared spectroscopy #Mathematical models #Phosphoric acid #Precipitation (chemical) #Synthesis (chemical) #X ray crystallography #Lanthanum trimetaphosphate #Simple overlap model #Lanthanum compounds |
Tipo |
info:eu-repo/semantics/article |