Photoacoustic and photoluminescence studies on ThO2:Sm3+

被引：0
作者：
D. Chandra Shekhar
Santosh K. Gupta
K. Sudarshan
R. M. Kadam
T. P. Chaturvedi
机构：
[1] Bhabha Atomic Research Centre,Product Development Section
[2] Bhabha Atomic Research Centre,Radiochemistry Division
[3] Homi Bhabha National Institute,undefined
来源：
Journal of Radioanalytical and Nuclear Chemistry | 2017年 / 313卷
关键词：
Thoria; ThO; :Nd; ThO; :Sm; X-ray diffraction (XRD); Photoacoustic (PA); Photoluminescence (PL);
D O I：
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中图分类号：
学科分类号：
摘要：
Nanocrystalline ThO2:Sm3+ was synthesized using wet-chemical route and characterized using X-ray diffraction (XRD), photoacoustic (PA) and photoluminescence (PL) spectroscopy. PA absorptions of Sm3+ doped samples are found to be quite weak as compared to Nd3+, while PL of Sm3+ was intense. As the energy gap between lowest luminescent levels and highest non-luminescent level in samarium ion is around 7000 cm−1; it is highly fluorescing compared to Nd3+ which has close by levels. Through photoacoustic data it was pointed out that large covalent character exists in ThO2:Nd3+ compared to ThO2:Sm3+.
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页码：547 / 553
页数：6
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