TY - JOUR
T1 - Structural refinement of Eu doped CaMgSi2O6 using X-ray powder diffraction data
AU - Kim, Yong Il
AU - Nahm, Seung Hoon
AU - Im, Won Bin
AU - Jeon, Duk Young
AU - Gregory, Duncan H.
N1 - Funding Information:
Authors acknowledge the Ministry of Science and Technology of Korea for financial support through Centre for Nanoscale Mechatronics and the 21st Century Frontier R&D Program.
Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2005/10
Y1 - 2005/10
N2 - Blue-color emitting material, CaMgSi2O6:Eu 2+ (CMS:Eu2+), was synthesized by a normal solid state reaction using CaCO3, MgO, SiO2 and EuF3 as starting materials. The Rietveld method was employed to quantitatively determine the structural parameters of synthesized CMS:Eu2+. The structural parameters for CMS:Eu2+ were successfully determined by Rietveld refinement using X-ray powder diffraction data. The final weighted R-factor, Rwp, was 9.22% and the goodness-of-fit indicator, S(=Rwp/Re), was 1.45. The synthesized sample consisted of CMS:Eu2+ and SiO 2 (cristobalite) phases with refined phase fractions of 89.18(1)% and 10.82(2)%, respectively. Doped Eu2+ ions occupied the Ca sites (4e) and replaced 1.0% of the Ca2+ ions. The refined model of CMS:Eu 2+ describes a structure in monoclinic space group C 2/c with Z=4, a=9.7474(2) Å, b=8.9384(2) Å, c=5.2490(1) Å and β=105.87 (1)°.
AB - Blue-color emitting material, CaMgSi2O6:Eu 2+ (CMS:Eu2+), was synthesized by a normal solid state reaction using CaCO3, MgO, SiO2 and EuF3 as starting materials. The Rietveld method was employed to quantitatively determine the structural parameters of synthesized CMS:Eu2+. The structural parameters for CMS:Eu2+ were successfully determined by Rietveld refinement using X-ray powder diffraction data. The final weighted R-factor, Rwp, was 9.22% and the goodness-of-fit indicator, S(=Rwp/Re), was 1.45. The synthesized sample consisted of CMS:Eu2+ and SiO 2 (cristobalite) phases with refined phase fractions of 89.18(1)% and 10.82(2)%, respectively. Doped Eu2+ ions occupied the Ca sites (4e) and replaced 1.0% of the Ca2+ ions. The refined model of CMS:Eu 2+ describes a structure in monoclinic space group C 2/c with Z=4, a=9.7474(2) Å, b=8.9384(2) Å, c=5.2490(1) Å and β=105.87 (1)°.
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U2 - 10.1016/j.jlumin.2005.02.006
DO - 10.1016/j.jlumin.2005.02.006
M3 - Article
AN - SCOPUS:24044489610
SN - 0022-2313
VL - 115
SP - 1
EP - 6
JO - Journal of Luminescence
JF - Journal of Luminescence
IS - 1-2
ER -