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Synthesis and characterization of powder four borate Sr3Sm2(BO3)4

Published online by Cambridge University Press:  29 May 2013

Jia-Yong Si  and
Ge-Mei Cai
Jia-Yong Si
Affiliation:
College of Mechanical and Electrical Engineering, Central South University of Forestry and Technology, Changsha 410004, China
Ge-Mei Cai*
Affiliation:
School of Materials Science and Engineering, Central South University, Changsha, Hunan 410083, China
*
a) Author to whom correspondence should be addressed. Electronic mail: caigemei@csu.edu.cn
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Abstract

Polycrystalline Sr3Sm2(BO3)4 borate has been synthesized through a solid-state reaction, and the title compound is stable in air and water. Its crystal structure was investigated from powder X-ray diffraction data using the Rietveld method. The fundamental building units of the crystal Sr3Sm2(BO3)4 are isolated BO3 anionic groups, distorted Sm–O polyhedra, and irregular Sr–O polyhedra, with the crystal structure isostructural to Sr3Nd2(BO3)4. The infrared spectrum of Sr3Sm2(BO3)4 has been measured, which is consistent with the crystallographic study. According to diffuse reflection measurement of Sr3Sm2(BO3)4 powders, the absorption edge is in the deep UV range and UV-vis transmittance is very high. Phosphor Sr3Sm2(BO3)4 exhibits an orange-red emission.

Keywords

X-ray powder diffractionRietveld refinementboratecrystal structureluminescence
Type
Technical Articles
Information
Powder Diffraction , Volume 28 , Issue 4 , December 2013 , pp. 262 - 268
Copyright
Copyright © International Centre for Diffraction Data 2013 

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