کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1409122 | 1501787 | 2012 | 5 صفحه PDF | دانلود رایگان |
The electron paramagnetic resonance (EPR) of Eu2+ and Gd3+ ions in PbWO4 crystals doped with paramagnetic impurities was investigated using an X-band spectrometer. It was found that during the growth of these crystals, Gd3+ ions substitute for the Pb2+ ions more effectively than Eu2+ ions. In addition, the relaxation rate 1/T1 of the 207Pb nuclei in pure and doped PbWO4 single crystals was studied using a nuclear magnetic resonance (NMR) spectrometer over a temperature range of 180–400 K. The relaxation mechanisms of the pure and doped crystals were Raman processes, resulting in relaxation rates that were proportional to the square of temperature.
► The EPR of the Eu2+ and Gd3+ in PbWO4 crystals doped with paramagnetic impurities.
► The spin–lattice relaxation rates of the 207Pb nuclei in pure and doped PbWO4 crystals.
► Raman processes.
Journal: Journal of Molecular Structure - Volume 1027, 14 November 2012, Pages 44–48