Synthesis and characterization of a novel alkaline earth niobate Ca0.5Sr0.5Nb2O6

被引：5

作者：

Dudhe, C. M. ^{[1
]}

Nagdeote, S. B. ^{[2
]}

Palikundwar, U. A. ^{[3
]}

机构：

[1] Govt Inst Sci, Dept Phys, Nagpur 440001, Maharashtra, India

[2] Amolakchand Mahavidhyalaya, Dept Phys, Yavatmal 445001, India

[3] RTM Nagpur Univ, Dept Phys, Nagpur 440033, Maharashtra, India

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2016年 / 658卷

关键词：

Chemical synthesis; Crystal structure; Optical spectroscopy; Luminescence; CRYSTAL-GROWTH; LUMINESCENCE; PHOSPHOR; LASER;

D O I：

10.1016/j.jallcom.2015.10.220

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：

Ca0.5Sr0.5Nb2O6 (CSN), a novel compound with crystal structure similar to the well-known orthorhombic columbite compound CaNb2O6 (CN) of alkaline earth niobates family was synthesized by a simple co-precipitation technique. The synthesized material was characterized by using X-ray diffraction (XRD) technique, transmission electron microscopy (TEM), UV-Vis diffuse reflectance spectroscopy, FTIR spectroscopy, and photoluminescence emission spectroscopy. It was found that the CSN compound stabilizes in P b c n space group with the improved symmetry as compared to the CN. The lattice parameters of CSN were found to be comparable with those of CN, and they are: a = 15.013 angstrom, b = 5.757 angstrom and c = 5.198 angstrom. The morphology of CSN and CN particles synthesized by a similar method was found to be identical. However, in CSN stronger self activated luminescence than that of CN was observed. The self-activated luminescence property of CSN was assigned to the niobate octahedral group [NbO6](7-) similar to the CN. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：55 / 60

页数：6

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