کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1740700 | 1521766 | 2014 | 7 صفحه PDF | دانلود رایگان |
• Systematic spectroscopic investigations of the lanthanide orthophosphates.
• Improvement of expected linear correlation of infrared wavenumbers versus ionic radii.
• Crystal str. D6 of hydrated LnPO4 is challenged: existence of weak ν1 in IR spectra.
• Discrete fluorescence bands observed in EuPO4 Raman spectrum.
Raman and infrared spectroscopic investigations were performed on synthetic lanthanide orthophosphates (LnPO4) within this study. Seven monoclinic monazite-type phosphates (Ln = La–Gd) were synthesised via precipitation route in aqueous solution at room temperature. Linear correlation between Raman band positions and the effective cationic radii of the Ln3+ was observed. New infrared spectroscopic data confirmed the expected steady increase of the LnPO4 wavenumbers regarding the Ln atomic number.
Journal: Progress in Nuclear Energy - Volume 72, April 2014, Pages 149–155