Photoacoustic spectroscopy of Ln3+ (Nd, Ho, and Er) doped ThO2

被引：10
|
作者：
Chandrasekhar, D. [1 ]
Gupta, Santosh K. [2 ]
Godbole, Sv. [2 ]
机构：
[1] Bhabha Atom Res Ctr, Product Dev Div, Mumbai 400085, Maharashtra, India
[2] Bhabha Atom Res Ctr, Div Radiochem, Mumbai 400085, Maharashtra, India
来源：
JOURNAL OF MOLECULAR STRUCTURE | 2013年 / 1051卷
关键词：
ThO2; Lanthanides; PAS; Non-radiative; Covalency; LUMINESCENCE; EU3+; SITE;
D O I：
10.1016/j.molstruc.2013.08.001
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Undoped and ThO2:Ln(3+) (Ln = Nd, Ho, and Er) were synthesized by wet chemical route and characterized using X-ray diffraction (XRD). PAS was used to investigate electronic absorption of Nd3+, Ho3+ and Er3+ in thorium dioxide as well as of pure rare earth oxide powder Ln(2)O(3) (Ln = Nd, Ho, and Er). PA spectra were also obtained for aqueous solution of lanthanides for evaluating various covalency parameters. Various covalency parameters like nephelauxetic ratio (beta), covalency factor (b(1/2)) and Sinha parameter (delta) were evaluated for pure oxide powder and for rare earth doped thoria for all these system from their individual PA spectra. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：95 / 100
页数：6
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